Fix issue with ast_unescape_semicolon going into an endless loop.

(closes issue #10550)
Reported by: ramonpeek
Patches:
      unescape-85177-1.patch uploaded by IgorG (license 20)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@87294 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/utils.c

@@ -942,6 +942,8 @@ char *ast_unescape_semicolon(char *s)
 		if ((e > work) && (*(e-1) == '\\')) {
 			memmove(e - 1, e, strlen(e) + 1);
 			work = e;
+		} else {
+			work = e + 1;
 		}
 	}