Fix missing braces around PREPUP_OPT

tests/Makefile.fpc

@@ -749,15 +749,15 @@ $(TEST_OUTPUTDIR)/$(DB_TARGZ): $(TEST_OUTPUTDIR)/dbdigest.cfg
 ifdef inDOS
         $(ECHOREDIR) @echo off > dotgz$(SRCBATCHEXT)
         $(ECHOREDIR) cd $(subst /,\,$(TEST_OUTPUTDIR)) >> dotgz$(SRCBATCHEXT)
-        $(ECHOREDIR) $(subst /,\,../../$(PREPUP)) $PREPUP_OPT $(DB_TARGZ) >> dotgz$(SRCBATCHEXT)
+        $(ECHOREDIR) $(subst /,\,../../$(PREPUP)) $(PREPUP_OPT) $(DB_TARGZ) >> dotgz$(SRCBATCHEXT)
         $(ECHOREDIR) if errorlevel 1 $(DEL) $(DB_TARGZ) >> dotgz$(SRCBATCHEXT)
         $(ECHOREDIR) cd $(subst /,\,../../) >> dotgz$(SRCBATCHEXT)
         $(RUNBATCH) dotgz$(SRCBATCHEXT)
 else
 ifdef inOS2
-        cd "$(subst /,\,$(TEST_OUTPUTDIR))" && "$(subst /,\,../../$(PREPUP))" $PREPUP_OPT $(DB_TARGZ)
+        cd "$(subst /,\,$(TEST_OUTPUTDIR))" && "$(subst /,\,../../$(PREPUP))" $(PREPUP_OPT) $(DB_TARGZ)
 else
-        cd "$(TEST_OUTPUTDIR)" && "../../$(PREPUP)" $PREPUP_OPT $(DB_TARGZ)
+        cd "$(TEST_OUTPUTDIR)" && "../../$(PREPUP)" $(PREPUP_OPT) $(DB_TARGZ)
 endif
 endif
 endif