Bash-5.3 patch 5: fix crash when restoring default disposition for SIGINT in asynchronous subshell

patchlevel.h

@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 4
+#define PATCHLEVEL 5
 
 #endif /* _PATCHLEVEL_H_ */

trap.c

@@ -964,6 +964,7 @@ restore_default_signal (int sig)
       original_signals[sig] = SIG_DFL;	/* XXX */
       set_signal_handler (sig, SIG_DFL);
       change_signal (sig, (char *)DEFAULT_SIG);
+      sigmodes[sig] &= ~SIG_TRAPPED;	/* no longer trapped */
       return;
     }