Bug 272843 - remove redundant makefile variable MOZ_COMPONENT_XPCOM_LIBS r=darin

config/config.mk

@@ -707,10 +707,9 @@ SDK_BIN_DIR = $(DIST)/sdk/bin
 
 DEPENDENCIES	= .md
 
-MOZ_COMPONENT_LIBS=$(MOZ_COMPONENT_XPCOM_LIBS) $(MOZ_COMPONENT_NSPR_LIBS)
+MOZ_COMPONENT_LIBS=$(XPCOM_LIBS) $(MOZ_COMPONENT_NSPR_LIBS)
 
 ifdef GC_LEAK_DETECTOR
-MOZ_COMPONENT_XPCOM_LIBS += -lboehm
 XPCOM_LIBS += -lboehm
 endif