Fix potential sign issue.

Signed-off-by: Andrea Odetti <mariofutire@gmail.com>

source/frontends/common2/utils.cpp

@@ -145,7 +145,10 @@ namespace common2
         DWORD value;
         if (RegLoadValue(path.c_str(), name, TRUE, &value))
         {
-          dest = value;
+          // DWORD and int have the same size
+          // but if they did not, this would be necessary
+          typedef std::make_signed<DWORD>::type signed_t;
+          dest = static_cast<signed_t>(value);
         }
       };
 
@@ -161,9 +164,9 @@ namespace common2
     const std::string path = section + "\\geometry";
     const auto saveValue = [&path](const char * name, const int source)
     {
+      // this seems to already do the right thing for negative numbers
       RegSaveValue(path.c_str(), name, TRUE, source);
     };
-
     saveValue("width", geometry.width);
     saveValue("height", geometry.height);
     saveValue("x", geometry.x);

source/linux/context.cpp

@@ -79,4 +79,4 @@ RegistryContext::RegistryContext(const std::shared_ptr<Registry> & registry)
 RegistryContext::~RegistryContext()
 {
   Registry::instance.reset();
-}
+}