Assign LDFLAGS to UTIL_LDFLAGS with expansion to prevent later changes to

LDFLAGS from being reflected in UTIL_LDFLAGS.

src/sbbs3/GNUmakefile

@@ -16,7 +16,8 @@
 SRC_ROOT	=	..
 include $(SRC_ROOT)/build/Common.gmake
 
-UTIL_LDFLAGS	+=	$(LDFLAGS) $(SMBLIB_LDFLAGS) $(UIFC-MT_LDFLAGS) $(CIOLIB-MT_LDFLAGS) $(XPDEV_LDFLAGS)
+UTIL_LDFLAGS	:=	$(LDFLAGS)
+UTIL_LDFLAGS	+=	$(SMBLIB_LDFLAGS) $(UIFC-MT_LDFLAGS) $(CIOLIB-MT_LDFLAGS) $(XPDEV_LDFLAGS)
 UTIL_LIBS	+=	$(SMBLIB_LIBS)
 
 ifndef bcc