Bug 230183 preprocessor.pl not executed correctly in /toolkit/mozapps/downloads/src on BeOS

Patch by thesuckiestemail@yahoo.se r=bryner

toolkit/mozapps/downloads/src/Makefile.in

@@ -31,7 +31,7 @@ MODULE = helperAppDlg
 libs:: nsHelperAppDlg.js
 
 nsHelperAppDlg.js: nsHelperAppDlg.js.in
-	$(MOZILLA_DIR)/config/preprocessor.pl $(DEFINES) $(ACDEFINES) $^ > $@ 
+	$(PERL) $(MOZILLA_DIR)/config/preprocessor.pl $(DEFINES) $(ACDEFINES) $^ > $@ 
 	$(NSINSTALL) $@ $(DIST)/bin/components/
 
 include $(topsrcdir)/config/rules.mk