More callstacks on android.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4415 ed5197a5-7fde-0310-b194-c3ffbd925b24

src/main.c

@@ -636,9 +636,13 @@ int main(int argc, char* argv[])
 #if defined(__ANDROID__)
 	use_error_handler = true;
 #endif
-	if (use_error_handler && signal(SIGSEGV, _error_handler) == SIG_ERR)
+	if (use_error_handler)
 	{
-		perror("signal");
+		if (signal(SIGSEGV, _error_handler) == SIG_ERR ||
+			signal(SIGSYS, _error_handler) == SIG_ERR)
+		{
+			perror("signal");
+		}
 	}
 
 	int result = 0;