Index: generic/nsf.c
===================================================================
diff -u -re791865c0d6d854df515e7e0184e0d1d7b347c98 -r2b63021196c8886e61e032e05deb4d5c9c1f01e6
--- generic/nsf.c	(.../nsf.c)	(revision e791865c0d6d854df515e7e0184e0d1d7b347c98)
+++ generic/nsf.c	(.../nsf.c)	(revision 2b63021196c8886e61e032e05deb4d5c9c1f01e6)
@@ -18775,6 +18775,12 @@
                             NSF_DISALLOWED_ARG_METHOD_PARAMETER, NSF_FALSE,
                             &parsedParam,
                             nsPtr1 != NULL ? nsPtr1->fullName : NULL);
+  } else {
+    /*
+     * Strictly speaking, the following assignment is not necessary. However,
+     * it avoids a false positive from facbook infer.
+     */
+    parsedParam.paramDefs = NULL;
   }
 
   if (unlikely(result != TCL_OK)) {