When parsing environment variable ASTERISK_PROMPT, make sure to proceed to the next character when a non format specifier is used (no %). Otherwise, the while loop looking for the null byte will never exit.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@167125 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/asterisk.c

@@ -2235,10 +2235,10 @@ static char *cli_prompt(EditLine *editline)
 					t--;
 					break;
 				}
-				t++;
 			} else {
 				ast_str_append(&prompt, 0, "%c", *t);
 			}
+			t++;
 		}
 		if (color_used) {
 			/* Force colors back to normal at end */