Make sure that the crashlog actually gets written.

src/backends/unix/signalhandler.c

@@ -75,7 +75,6 @@ printBacktrace(int sig)
 	printf("Signal:       %i\n", sig);
 	printf("\nBacktrace:\n");
 	printf("  Not available on this plattform.\n\n");
-
 }
 
 #endif
@@ -111,6 +110,9 @@ signalhandler(int sig)
 	signal(SIGFPE, SIG_DFL);
 	signal(SIGABRT, SIG_DFL);
 
+	/* make sure this is written */
+	fflush(stdout);
+
 	/* pass signal to the os */
 	raise(sig);
 }