patch from Honza Horak using Coverity's static analysis tool.

lib/cdda_interface/cddap_interface.c

@@ -281,6 +281,7 @@ verify_read_command(cdrom_drive_t *d)
 
   if(!audioflag){
     cdmessage(d,"\tCould not find any audio tracks on this disk.\n");
+    free(buff);
     return(-403);
   }
 

lib/cdda_interface/common_interface.c

@@ -58,8 +58,8 @@ data_bigendianp(cdrom_drive_t *d)
   float *a=calloc(1024,sizeof(float));
   float *b=calloc(1024,sizeof(float));
   long readsectors=5;
-  int16_t *buff=malloc(readsectors*CDIO_CD_FRAMESIZE_RAW);
-  memset(buff, 0, readsectors*CDIO_CD_FRAMESIZE_RAW);
+  int16_t *buff=malloc(readsectors*CDIO_CD_FRAMESIZE_RAW*sizeof(int16_t));
+  memset(buff, 0, readsectors*CDIO_CD_FRAMESIZE_RAW*sizeof(int16_t));
 
   /* look at the starts of the audio tracks */
   /* if real silence, tool in until some static is found */

lib/cdda_interface/scan_devices.c

@@ -325,7 +325,6 @@ cdda_identify_device_cdio(CdIo_t *p_cdio, const char *psz_device,
 	snprintf( d->drive_model, i_len, "%s %s %s %s", 
 		  hw_info.psz_vendor, hw_info.psz_model, hw_info.psz_revision,
 		  description );
-	free(description);
       } else {
 	d->drive_model=malloc( i_len );
 	snprintf( d->drive_model, i_len, "%s %s %s", 
@@ -337,5 +336,8 @@ cdda_identify_device_cdio(CdIo_t *p_cdio, const char *psz_device,
     }
   }
   
+  if (description)
+    free(description);
+
   return(d);
 }