add FixedVec::value_type

include/mcl/array.hpp

@@ -118,6 +118,7 @@ class FixedArray {
 		y = t;
 	}
 public:
+	typedef T value_type;
 	FixedArray() : n_(0) {}
 	bool resize(size_t n)
 	{

include/mcl/gmp_util.hpp

@@ -642,7 +642,7 @@ void getNAFwidth(bool *pb, Vec& naf, mpz_class x, size_t w)
 			x++;
 			v -= maxW;
 		}
-		naf.push(pb, v);
+		naf.push(pb, typename Vec::value_type(v));
 		if (!*pb) return;
 		zeroNum = w - 1;
 	}