fixed build error when make run with -jN option

Race can occur when gitversion file isn't fully generated before
it is used.

src/ui/console.c

@@ -41,7 +41,7 @@
 #include "xmpp/bookmark.h"
 
 #ifdef HAVE_GIT_VERSION
-#include "gitversion.c"
+#include "gitversion.h"
 #endif
 
 static void _cons_splash_logo(void);

src/ui/core.c

@@ -23,7 +23,7 @@
 #include "config.h"
 
 #ifdef HAVE_GIT_VERSION
-#include "gitversion.c"
+#include "gitversion.h"
 #endif
 
 #include <stdlib.h>