Merge branch 'sb/misc-cleanup'

* sb/misc-cleanup:
  rm: remove unneeded null pointer check
  diff: fix a possible null pointer dereference
  diff: remove ternary operator evaluating always to true

Author: gitster

builtin/rm.c

@@ -277,8 +277,8 @@ static struct option builtin_rm_options[] = {
 
 int cmd_rm(int argc, const char **argv, const char *prefix)
 {
-	int i, newfd;
-	const char **pathspec;
+	int i, newfd, seen_any;
+	const char **pathspec, *match;
 	char *seen;
 
 	git_config(git_default_config, NULL);
@@ -314,7 +314,6 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 	pathspec = get_pathspec(prefix, argv);
 	refresh_index(&the_index, REFRESH_QUIET, pathspec, NULL, NULL);
 
-	seen = NULL;
 	for (i = 0; pathspec[i] ; i++)
 		/* nothing */;
 	seen = xcalloc(i, 1);
@@ -328,27 +327,24 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 		list.entry[list.nr++].is_submodule = S_ISGITLINK(ce->ce_mode);
 	}
 
-	if (pathspec) {
-		const char *match;
-		int seen_any = 0;
-		for (i = 0; (match = pathspec[i]) != NULL ; i++) {
-			if (!seen[i]) {
-				if (!ignore_unmatch) {
-					die(_("pathspec '%s' did not match any files"),
-					    match);
-				}
-			}
-			else {
-				seen_any = 1;
+
+	seen_any = 0;
+	for (i = 0; (match = pathspec[i]) != NULL ; i++) {
+		if (!seen[i]) {
+			if (!ignore_unmatch) {
+				die(_("pathspec '%s' did not match any files"),
+				    match);
 			}
-			if (!recursive && seen[i] == MATCHED_RECURSIVELY)
-				die(_("not removing '%s' recursively without -r"),
-				    *match ? match : ".");
 		}
-
-		if (! seen_any)
-			exit(0);
+		else {
+			seen_any = 1;
+		}
+		if (!recursive && seen[i] == MATCHED_RECURSIVELY)
+			die(_("not removing '%s' recursively without -r"),
+			    *match ? match : ".");
 	}
+	if (!seen_any)
+		exit(0);
 
 	/*
 	 * If not forced, the file, the index and the HEAD (if exists)

diff.c

@@ -669,7 +669,7 @@ static void emit_rewrite_diff(const char *name_a,
 	memset(&ecbdata, 0, sizeof(ecbdata));
 	ecbdata.color_diff = want_color(o->use_color);
 	ecbdata.found_changesp = &o->found_changes;
-	ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
+	ecbdata.ws_rule = whitespace_rule(name_b);
 	ecbdata.opt = o;
 	if (ecbdata.ws_rule & WS_BLANK_AT_EOF) {
 		mmfile_t mf1, mf2;
@@ -2252,7 +2252,7 @@ static void builtin_diff(const char *name_a,
 			(!two->mode || S_ISGITLINK(two->mode))) {
 		const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
 		const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
-		show_submodule_summary(o->file, one ? one->path : two->path,
+		show_submodule_summary(o->file, one->path ? one->path : two->path,
 				line_prefix,
 				one->sha1, two->sha1, two->dirty_submodule,
 				meta, del, add, reset);
@@ -2372,7 +2372,7 @@ static void builtin_diff(const char *name_a,
 		ecbdata.label_path = lbl;
 		ecbdata.color_diff = want_color(o->use_color);
 		ecbdata.found_changesp = &o->found_changes;
-		ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
+		ecbdata.ws_rule = whitespace_rule(name_b);
 		if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
 			check_blank_at_eof(&mf1, &mf2, &ecbdata);
 		ecbdata.opt = o;