astro/foxtrotgps: fix run crash

- Fix crash, retrieved from upstream

PR:		ports/179919
Submitted by:	Craig Whipp <crwhipp@gmail.com> (maintainer)

astro/foxtrotgps/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	foxtrotgps
 PORTVERSION=	1.1.1
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	astro geography
 MASTER_SITES=	http://www.foxtrotgps.org/releases/
 

astro/foxtrotgps/files/patch-src-main

@@ -0,0 +1,21 @@
+=== modified file 'src/main.c'
+--- src/main.c	2013-01-06 01:48:33 +0000
++++ src/main.c	2013-06-12 04:48:57 +0000
+@@ -77,7 +77,7 @@
+ 	if (!g_thread_supported ())
+ 		g_thread_init (NULL);
+ 	gdk_threads_init ();
+-
++	gdk_threads_enter ();
+ 	gtk_init (&argc, &argv);
+ 
+ 	setlocale (LC_NUMERIC, "C");
+@@ -203,7 +203,7 @@
+ 	
+ 	gtk_main ();
+ 
+-
++	gdk_threads_leave ();
+ 	
+ 	return 0;
+ }