return properly after extending file

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@7803 65c4cc65-6c06-0410-ace0-fbb531ad65f3

formats/format_pcm.c

@@ -207,6 +207,7 @@ static int pcm_seek(struct ast_filestream *fs, long sample_offset, int whence)
 					return res;
 				left -= res;
 			}
+			return offset;
 		}
 		/* fall through */
 	default:

formats/format_pcm_alaw.c

@@ -282,6 +282,7 @@ static int pcm_seek(struct ast_filestream *fs, long sample_offset, int whence)
 					return res;
 				left -= res;
 			}
+			return offset;
 		}
 		/* fall through */
 	default: