Fix conditional definition of USERDICT_OPT.

Make sure USERDICT_OPT is always defined, even as an empty
string (if the only estimator backend available is pwquality).

src/scorepw.c

@@ -36,13 +36,15 @@
 #define FLAGS_MULTI_BACKEND	0x02
 #define FLAGS_NO_INTERNAL_DICT	0x04
 
-#if NUM_BACKENDS > 1 || defined(HAVE_PWQUALITY)
+#if NUM_BACKENDS > 1 || !defined(HAVE_PWQUALITY)
 #define HAVE_USERDICT 1
 #ifdef HAVE_INTERNAL_DICT
 #define USERDICT_OPT "d:D"
 #else
 #define USERDICT_OPT "d:"
 #endif
+#else
+#define USERDICT_OPT
 #endif