Fix typo that causes a failure to update the common directory. (releng

#2781)

Makefile

@@ -4,7 +4,7 @@ NAME := gtk-recordmydesktop
 SPECFILE = $(firstword $(wildcard *.spec))
 
 define find-makefile-common
-for d in common ../common ../../common ; do if [ -f $$d/Makefile.common ] ; then if [ -f $$d/CVS/Root -a -w $$/Makefile.common ] ; then cd $$d ; cvs -Q update ; fi ; echo "$$d/Makefile.common" ; break ; fi ; done
+for d in common ../common ../../common ; do if [ -f $$d/Makefile.common ] ; then if [ -f $$d/CVS/Root -a -w $$d/Makefile.common ] ; then cd $$d ; cvs -Q update ; fi ; echo "$$d/Makefile.common" ; break ; fi ; done
 endef
 
 MAKEFILE_COMMON := $(shell $(find-makefile-common))