Clean up warnings

* msvc
 * pvs-studio

include/chaiscript/utility/fnv1a.hpp

@@ -7,16 +7,34 @@
 #ifndef CHAISCRIPT_UTILITY_FNV1A_HPP_
 #define CHAISCRIPT_UTILITY_FNV1A_HPP_
 
+
 #include <cstdint>
+#include "../chaiscript_defines.hpp"
+
 
 namespace chaiscript
 {
+
+
   namespace utility
   {
+
+
     static constexpr std::uint32_t fnv1a_32(const char *s, std::uint32_t h = 0x811c9dc5) {
+#ifdef CHAISCRIPT_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4307)
+#endif
       return (*s == 0) ? h : fnv1a_32(s+1, ((h ^ (*s)) * 0x01000193));
+#ifdef CHAISCRIPT_MSVC
+#pragma warning(pop)
+#endif
     }
+
+
   }
+
+
 }
 
 #endif