Fix memory leak in multiUserAuthorized

src/httprpc.cpp

@@ -113,7 +113,7 @@ static bool multiUserAuthorized(std::string strUserPass)
             std::string strHash = vFields[2];
 
             unsigned int KEY_SIZE = 32;
-            unsigned char *out = new unsigned char[KEY_SIZE]; 
+            unsigned char out[KEY_SIZE];
 
             CHMAC_SHA256(reinterpret_cast<const unsigned char*>(strSalt.c_str()), strSalt.size()).Write(reinterpret_cast<const unsigned char*>(strPass.c_str()), strPass.size()).Finalize(out);
             std::vector<unsigned char> hexvec(out, out+KEY_SIZE);