dummy default target for non-Windows compilation

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@55260 15284696-431f-4ddb-bdfa-cd5b030d7da7

mswindows/Makefile

@@ -10,6 +10,8 @@ OSGEO4W_DIR_POSTFIX = '_g7'
 
 ifneq ($(MINGW),)
 default: GRASS-Packager.bat GRASS-Installer.nsi
+else
+default:
 endif	
 
 GRASS-Packager.bat: GRASS-Packager.bat.tmpl