Yet a few more compiler warning fixes, msvc stuff this time

Signed-off-by: falkTX <falktx@falktx.com>

dgl/NanoVG.hpp

@@ -24,6 +24,7 @@
 #include "StandaloneWindow.hpp"
 
 #ifdef _MSC_VER
+# pragma warning(push)
 # pragma warning(disable:4661) /* instantiated template classes whose methods are defined elsewhere */
 #endif
 
@@ -969,7 +970,7 @@ typedef NanoSubWidget NanoWidget;
 END_NAMESPACE_DGL
 
 #ifdef _MSC_VER
-# pragma warning(enable:4661)
+# pragma warning(pop)
 #endif
 
 #endif // DGL_NANO_WIDGET_HPP_INCLUDED

distrho/src/DistrhoPluginInternal.hpp

@@ -355,7 +355,7 @@ public:
 
             portGroupIndices.erase(kPortGroupNone);
 
-            if (const uint32_t portGroupSize = portGroupIndices.size())
+            if (const uint32_t portGroupSize = static_cast<uint32_t>(portGroupIndices.size()))
             {
                 fData->portGroups = new PortGroupWithId[portGroupSize];
                 fData->portGroupCount = portGroupSize;

distrho/src/DistrhoUILV2.cpp

@@ -285,11 +285,13 @@ protected:
         tmpStr[std::strlen(key)] = '\0';
 
         // set msg size (key + separator + value + null terminator)
-        const size_t msgSize = tmpStr.length() + 1U;
+        const uint32_t msgSize = static_cast<uint32_t>(tmpStr.length()) + 1U;
 
         // reserve atom space
-        const size_t atomSize = sizeof(LV2_Atom) + msgSize;
+        const uint32_t atomSize = sizeof(LV2_Atom) + msgSize;
         char* const  atomBuf = (char*)malloc(atomSize);
+        DISTRHO_SAFE_ASSERT_RETURN(atomBuf != nullptr,);
+
         std::memset(atomBuf, 0, atomSize);
 
         // set atom info