Sound: fix a memleak

Author: CarterLi

src/detection/sound/sound_linux.c

@@ -13,7 +13,7 @@ static void paSinkInfoCallback(pa_context *c, const pa_sink_info *i, int eol, vo
 
     FFSoundDevice* device = ffListAdd(userdata);
     ffStrbufInitS(&device->identifier, i->name);
-    ffStrbufInitS(&device->platformApi, "PulseAudio");
+    ffStrbufInitStatic(&device->platformApi, "PulseAudio");
     ffStrbufTrimRightSpace(&device->identifier);
     ffStrbufInitS(&device->name, i->description);
     ffStrbufTrimRightSpace(&device->name);

src/modules/sound/sound.c

@@ -105,6 +105,7 @@ void ffPrintSound(FFSoundOptions* options)
     {
         ffStrbufDestroy(&device->identifier);
         ffStrbufDestroy(&device->name);
+        ffStrbufDestroy(&device->platformApi);
     }
 }
 
@@ -226,6 +227,7 @@ void ffGenerateSoundJsonResult(FF_MAYBE_UNUSED FFSoundOptions* options, yyjson_m
     {
         ffStrbufDestroy(&device->identifier);
         ffStrbufDestroy(&device->name);
+        ffStrbufDestroy(&device->platformApi);
     }
 }