Fix potential memleak.

src/misc/update.c

@@ -1289,7 +1289,6 @@ void update_download_for_real( download_thread_t *p_this )
     }
     else
     {
-
         p_file = utf8_fopen( psz_dest, "w" );
         if( !p_file )
         {
@@ -1305,7 +1304,8 @@ void update_download_for_real( download_thread_t *p_this )
 
             l_size = stream_Size(p_stream);
             p_buffer = (void *)malloc( 1<<10 );
-
+            if( p_buffer )
+            {
                 while( ( l_read = stream_Read( p_stream, p_buffer, 1<<10 ) ) )
                 {
                     float f_progress;
@@ -1319,13 +1319,15 @@ void update_download_for_real( download_thread_t *p_this )
                     psz_s2 = size_str( l_size );
                     asprintf( &psz_status, "%s\nDownloading... %s/%s (%.1f%%) done",
                             p_this->psz_status, psz_s1, psz_s2, f_progress );
-                free( psz_s1 ); free( psz_s2 );
+                    free( psz_s1 );
+                    free( psz_s2 );
 
                     intf_ProgressUpdate( p_libvlc, i_progress,
                                         psz_status, f_progress, 0 );
                 }
 
                 free( p_buffer );
+            }
             fclose( p_file );
             stream_Delete( p_stream );