Workaround spurious gcc warning [-Woverlength]

warning: string length ‘2241’ is greater than the length ‘509’ ISO C90 compilers are required to support [-Woverlength-strings]
diff --git a/Source/Swig/typeobj.c b/Source/Swig/typeobj.c
index 7a0626c..69fb666 100644
--- a/Source/Swig/typeobj.c
+++ b/Source/Swig/typeobj.c
@@ -864,9 +864,8 @@
       Delete(qualifiers);
     }
     qualifiers = qual;
-    c = Char(t);
   }
-  assert(strncmp(c, "f(", 2) == 0);
+  assert(Strncmp(t, "f(", 2) == 0);
 
   return qualifiers;
 }