Clean trailing whitespaces in Makefile.pre.in.

Makefile.pre.in

@@ -509,7 +509,7 @@ $(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK): \
 		-install_name $(DESTDIR)$(PYTHONFRAMEWORKINSTALLDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK) \
 		-compatibility_version $(VERSION) \
 		-current_version $(VERSION) \
-		-framework CoreFoundation $(LIBS); 
+		-framework CoreFoundation $(LIBS);
 	$(INSTALL) -d -m $(DIRMODE)  \
 		$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/Resources/English.lproj
 	$(INSTALL_DATA) $(RESSRCDIR)/Info.plist \