fix some -Wzero-as-null-pointer-constant warnings. (#68)

Author: sezero

src/options.c

@@ -125,49 +125,49 @@ static void usage(char *s, struct options *options)
 }
 
 static const struct option lopt[] = {
-	{ "amiga",		0, 0, 'A' },
-	{ "amplify",		1, 0, 'a' },
-	{ "bits",		1, 0, 'b' },
-	{ "driver",		1, 0, 'd' },
-	{ "default-pan",	1, 0, 'p' },
-	{ "fix-sample-loops",	0, 0, OPT_FIXLOOP },
-	{ "frequency",		1, 0, 'f' },
-	{ "help",		0, 0, 'h' },
-	{ "instrument-path",	1, 0, 'I' },
-	{ "interpolation",	1, 0, 'i' },
-	{ "list-formats",	0, 0, 'L' },
-	{ "loop",		0, 0, 'l' },
-	{ "loop-all",		0, 0, OPT_LOOPALL },
-	{ "loop-until",		1, 0, 'U' },
-	{ "mixer-voices",	1, 0, OPT_NUMVOICES },
-	{ "mono",		0, 0, 'm' },
-	{ "mute",		1, 0, 'M' },
-	{ "null",		0, 0, 'N' },
-	{ "nocmd",		0, 0, OPT_NOCMD },
-	{ "norc",		0, 0, OPT_NORC },
-	{ "nofilter",		0, 0, 'F' },
-	/* { "offset-bug-emulation",0, 0, OPT_FX9BUG }, */
-	{ "output-file",	1, 0, 'o' },
-	{ "pan",		1, 0, 'P' },
-	{ "player-mode",	1, 0, 'e' },
-	{ "probe-only",		0, 0, OPT_PROBEONLY },
-	{ "load-only",		0, 0, OPT_LOADONLY },
-	{ "quiet",		0, 0, 'q' },
-	{ "random",		0, 0, 'R' },
-	{ "reverse",		0, 0, 'r' },
-	{ "show-comment",	0, 0, 'C' },
-	{ "solo",		1, 0, 'S' },
-	{ "start",		1, 0, 's' },
-	{ "stdout",		0, 0, 'c' },
-	{ "tempo",		1, 0, 'T' },
-	{ "time",		1, 0, 't' },
-	{ "unsigned",		0, 0, 'u' },
-	{ "vblank",		0, 0, OPT_VBLANK },
-	{ "version",		0, 0, 'V' },
-	{ "verbose",		0, 0, 'v' },
-	{ "all-sequences",	1, 0, 'Z' },
-	{ "sequence",		1, 0, 'z' },
-	{ NULL,			0, 0, 0   }
+	{ "amiga",		0, NULL, 'A' },
+	{ "amplify",		1, NULL, 'a' },
+	{ "bits",		1, NULL, 'b' },
+	{ "driver",		1, NULL, 'd' },
+	{ "default-pan",	1, NULL, 'p' },
+	{ "fix-sample-loops",	0, NULL, OPT_FIXLOOP },
+	{ "frequency",		1, NULL, 'f' },
+	{ "help",		0, NULL, 'h' },
+	{ "instrument-path",	1, NULL, 'I' },
+	{ "interpolation",	1, NULL, 'i' },
+	{ "list-formats",	0, NULL, 'L' },
+	{ "loop",		0, NULL, 'l' },
+	{ "loop-all",		0, NULL, OPT_LOOPALL },
+	{ "loop-until",		1, NULL, 'U' },
+	{ "mixer-voices",	1, NULL, OPT_NUMVOICES },
+	{ "mono",		0, NULL, 'm' },
+	{ "mute",		1, NULL, 'M' },
+	{ "null",		0, NULL, 'N' },
+	{ "nocmd",		0, NULL, OPT_NOCMD },
+	{ "norc",		0, NULL, OPT_NORC },
+	{ "nofilter",		0, NULL, 'F' },
+/*	{ "offset-bug-emulation",0, NULL, OPT_FX9BUG }, */
+	{ "output-file",	1, NULL, 'o' },
+	{ "pan",		1, NULL, 'P' },
+	{ "player-mode",	1, NULL, 'e' },
+	{ "probe-only",		0, NULL, OPT_PROBEONLY },
+	{ "load-only",		0, NULL, OPT_LOADONLY },
+	{ "quiet",		0, NULL, 'q' },
+	{ "random",		0, NULL, 'R' },
+	{ "reverse",		0, NULL, 'r' },
+	{ "show-comment",	0, NULL, 'C' },
+	{ "solo",		1, NULL, 'S' },
+	{ "start",		1, NULL, 's' },
+	{ "stdout",		0, NULL, 'c' },
+	{ "tempo",		1, NULL, 'T' },
+	{ "time",		1, NULL, 't' },
+	{ "unsigned",		0, NULL, 'u' },
+	{ "vblank",		0, NULL, OPT_VBLANK },
+	{ "version",		0, NULL, 'V' },
+	{ "verbose",		0, NULL, 'v' },
+	{ "all-sequences",	1, NULL, 'Z' },
+	{ "sequence",		1, NULL, 'z' },
+	{ NULL,			0, NULL, 0   }
 };
 
 

src/sound_alsa.c

@@ -52,21 +52,19 @@ static int init(struct options *options)
 	snd_pcm_hw_params_set_access(pcm_handle, hwparams,
 						SND_PCM_ACCESS_RW_INTERLEAVED);
 	snd_pcm_hw_params_set_format(pcm_handle, hwparams, fmt);
-	snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &rate, 0);
+	snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &rate, NULL);
 	snd_pcm_hw_params_set_channels_near(pcm_handle, hwparams, &channels);
-	snd_pcm_hw_params_set_buffer_time_near(pcm_handle, hwparams, &btime, 0);
-	snd_pcm_hw_params_set_period_time_near(pcm_handle, hwparams, &ptime, 0);
+	snd_pcm_hw_params_set_buffer_time_near(pcm_handle, hwparams, &btime, NULL);
+	snd_pcm_hw_params_set_period_time_near(pcm_handle, hwparams, &ptime, NULL);
 	snd_pcm_nonblock(pcm_handle, 0);
 
 	if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0) {
-		fprintf(stderr, "Unable to set ALSA output parameters: %s\n",
-							snd_strerror(ret));
+		fprintf(stderr, "Unable to set ALSA output parameters: %s\n", snd_strerror(ret));
 		return -1;
 	}
 
 	if ((ret = snd_pcm_prepare(pcm_handle)) < 0) {
-		fprintf(stderr, "Unable to prepare ALSA: %s\n",
-					snd_strerror(ret));
+		fprintf(stderr, "Unable to prepare ALSA: %s\n", snd_strerror(ret));
 		return -1;
 	}
 
@@ -132,4 +130,3 @@ const struct sound_driver sound_alsa = {
 	onpause,
 	onresume
 };
-