Remove the FreeSWITCH core handler for SIG_CHLD.

This does not appear to be needed any longer, and while this is in
place a dependent library that tries to start a child process will
hang waiting on the SIG_CHLD signal that the FreeSWITCH core 'ate'.

FS-7250 #resolve

src/switch.c

@@ -90,24 +90,6 @@ static void handle_SIGILL(int sig)
 	return;
 }
 
-#ifndef WIN32
-
-static void handle_SIGCHLD(int sig)
-{
-	int status = 0;
-	int pid = 0;
-
-	if (sig) {};
-
-	pid = wait(&status);
-	if (pid > 0) {
-		system_ready = -1;
-	}
-
-	return;
-}
-#endif
-
 /* kill a freeswitch process running in background mode */
 static int freeswitch_kill_background()
 {
@@ -1088,8 +1070,6 @@ int main(int argc, char *argv[])
 			fprintf(stderr, "System Error!\n");
 			exit(-1);
 		}
-
-		signal(SIGCHLD, handle_SIGCHLD);
 	}
 #endif
 

src/switch_core.c

@@ -1813,16 +1813,6 @@ SWITCH_DECLARE(switch_status_t) switch_core_init(switch_core_flag_t flags, switc
 }
 
 
-#ifndef WIN32
-static void handle_SIGCHLD(int sig)
-{
-	int status = 0;
-
-	wait(&status);
-	return;
-}
-#endif
-
 #ifdef TRAP_BUS
 static void handle_SIGBUS(int sig)
 {
@@ -2311,13 +2301,6 @@ SWITCH_DECLARE(void) switch_core_set_signal_handlers(void)
 {
 	/* set signal handlers */
 	signal(SIGINT, SIG_IGN);
-#ifndef WIN32
-	if (switch_test_flag((&runtime), SCF_THREADED_SYSTEM_EXEC)) {
-		signal(SIGCHLD, SIG_DFL);
-	} else {
-		signal(SIGCHLD, handle_SIGCHLD);
-	}
-#endif
 #ifdef SIGPIPE
 	signal(SIGPIPE, SIG_IGN);
 #endif