audio: Drop superfluous conditionals around g_free()

Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

audio/alsaaudio.c

@@ -815,10 +815,8 @@ static void alsa_fini_out (HWVoiceOut *hw)
     ldebug ("alsa_fini\n");
     alsa_anal_close (&alsa->handle, &alsa->pollhlp);
 
-    if (alsa->pcm_buf) {
-        g_free (alsa->pcm_buf);
+    g_free(alsa->pcm_buf);
     alsa->pcm_buf = NULL;
-    }
 }
 
 static int alsa_init_out (HWVoiceOut *hw, struct audsettings *as)
@@ -978,10 +976,8 @@ static void alsa_fini_in (HWVoiceIn *hw)
 
     alsa_anal_close (&alsa->handle, &alsa->pollhlp);
 
-    if (alsa->pcm_buf) {
-        g_free (alsa->pcm_buf);
+    g_free(alsa->pcm_buf);
     alsa->pcm_buf = NULL;
-    }
 }
 
 static int alsa_run_in (HWVoiceIn *hw)

audio/audio_template.h

@@ -71,10 +71,7 @@ static void glue (audio_init_nb_voices_, TYPE) (struct audio_driver *drv)
 
 static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw)
 {
-    if (HWBUF) {
     g_free (HWBUF);
-    }
-
     HWBUF = NULL;
 }
 
@@ -92,9 +89,7 @@ static int glue (audio_pcm_hw_alloc_resources_, TYPE) (HW *hw)
 
 static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
 {
-    if (sw->buf) {
     g_free (sw->buf);
-    }
 
     if (sw->rate) {
         st_rate_stop (sw->rate);
@@ -172,10 +167,8 @@ static int glue (audio_pcm_sw_init_, TYPE) (
 static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw)
 {
     glue (audio_pcm_sw_free_resources_, TYPE) (sw);
-    if (sw->name) {
     g_free (sw->name);
     sw->name = NULL;
-    }
 }
 
 static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw)

audio/ossaudio.c

@@ -736,10 +736,8 @@ static void oss_fini_in (HWVoiceIn *hw)
 
     oss_anal_close (&oss->fd);
 
-    if (oss->pcm_buf) {
-        g_free (oss->pcm_buf);
+    g_free(oss->pcm_buf);
     oss->pcm_buf = NULL;
-    }
 }
 
 static int oss_run_in (HWVoiceIn *hw)

hw/audio/adlib.c

@@ -275,9 +275,7 @@ static void Adlib_fini (AdlibState *s)
     }
 #endif
 
-    if (s->mixbuf) {
-        g_free (s->mixbuf);
-    }
+    g_free(s->mixbuf);
 
     s->active = 0;
     s->enabled = 0;