Silence unused argument warnings.

opm/common/utility/ConditionalStorage.hpp

@@ -139,7 +139,7 @@ public:
         }
     }
 
-    ConditionalStorage& operator=(const ConditionalStorage& v)
+    ConditionalStorage& operator=(const ConditionalStorage&)
     {
         // ensure that the stored object can actually be assined to but not actually do
         // anything

tests/test_ConditionalStorage.cpp

@@ -48,7 +48,7 @@ public:
     IAmAnIslandLeaveMeAlone& operator=(const IAmAnIslandLeaveMeAlone&) = delete;
 };
 
-int main(int argc, char **argv)
+int main()
 {
     {
         typedef Opm::ConditionalStorage<true, std::string> ConditionalTrueString;