Don't rm files if cd fails.

Makefile.in

@@ -389,9 +389,9 @@ uninstall:
 	    esac ;					\
 	  fi ;						\
 	done
-	(cd ${infodir}; rm -f cl* emacs* forms* info* vip*)
-	(cd ${mandir};  rm -f emacs.1 etags.1 ctags.1)
-	(cd ${bindir};  rm -f emacs-${version} $(EMACS))
+	(cd ${infodir} && rm -f cl* emacs* forms* info* vip*)
+	(cd ${mandir}  && rm -f emacs.1 etags.1 ctags.1)
+	(cd ${bindir}  && rm -f emacs-${version} $(EMACS))
 
 
 FRC:
@@ -436,7 +436,7 @@ clean: FRC
 top_distclean=\
 	rm -f config.status ; \
 	rm -f Makefile ${SUBDIR_MAKEFILES} ; \
-	(cd lock ; rm -f *)
+	(cd lock && rm -f *)
 distclean: FRC
 	(cd src;      $(MAKE) $(MFLAGS) distclean)
 	(cd oldXMenu; $(MAKE) $(MFLAGS) distclean)
@@ -471,7 +471,7 @@ realclean: FRC
 ### it deletes backup and autosave files too.
 extraclean:
 	for i in ${SUBDIR}; do (cd $$i; $(MAKE) $(MFLAGS) extraclean); done
-	-(cd lock; rm *)
+	-(cd lock && rm *)
 	-rm config.status config-tmp-*
 	-rm -f *~ \#*