Patch by Robert Scheck <robert@fedoraproject.org> for dsniff >= 2.4b1 which
ensures when building using %{?_smp_mflags} that libmissing.a is built when
its being used for linking.

--- dsniff-2.4/Makefile.in		2018-07-14 02:54:20.405095355 +0200
+++ dsniff-2.4/Makefile.in.smp_mflags	2018-07-14 02:54:44.973245128 +0200
@@ -92,7 +92,7 @@
 	ar -cr $@ $(LIBOBJS)
 	$(RANLIB) $@
 
-dsniff: $(HDRS) $(SRCS) $(OBJS)
+dsniff: $(HDRS) $(SRCS) $(OBJS) libmissing.a
 	$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS) $(NIDSLIB) $(PCAPLIB) $(LNETLIB) $(DBLIB) $(SSLLIB)
 
 arpspoof: arpspoof.o arp.o