packetizer_copy: fix potential memleak

modules/packetizer/copy.c

@@ -101,7 +101,7 @@ static int Open( vlc_object_t *p_this )
         case VLC_FOURCC( 'X', 'v', 'i', 'D'):
         case VLC_FOURCC( 'x', 'v', 'i', 'd'):
         case VLC_FOURCC( 'D', 'X', '5', '0'):
-        case VLC_FOURCC( 0x04, 0,   0,   0):
+        case VLC_FOURCC( 0x04, 0,   0,   0 ):
         case VLC_FOURCC( '3', 'I', 'V', '2'):
             p_dec->fmt_out.i_codec = VLC_FOURCC( 'm', 'p', '4', 'v');
             break;
@@ -182,7 +182,7 @@ static int Open( vlc_object_t *p_this )
                     break;
                 default:
                     msg_Err( p_dec, "unknown raw audio sample size" );
-                    return VLC_EGENERIC;
+                    goto error;
             }
             break;
 
@@ -203,7 +203,7 @@ static int Open( vlc_object_t *p_this )
                     break;
                 default:
                     msg_Err( p_dec, "unknown raw audio sample size" );
-                    return VLC_EGENERIC;
+                    goto error;
             }
             break;
 
@@ -224,17 +224,24 @@ static int Open( vlc_object_t *p_this )
                     break;
                 default:
                     msg_Err( p_dec, "unknown raw audio sample size" );
-                    return VLC_EGENERIC;
+                    goto error;
             }
             break;
     }
 
     p_dec->p_sys = p_sys = malloc( sizeof( block_t ) );
     if( !p_sys )
+    {
+        es_format_Clean( &p_dec->fmt_out );
         return VLC_ENOMEM;
-    p_sys->p_block    = NULL;
+    }
+    p_sys->p_block = NULL;
 
     return VLC_SUCCESS;
+
+error:
+    es_format_Clean( &p_dec->fmt_out );
+    return VLC_EGENERIC;
 }
 
 /*****************************************************************************