Fixed some VS2015 compiler errors

modules/juce_blocks_basics/littlefoot/juce_LittleFootCompiler.h

@@ -1324,6 +1324,14 @@ private:
 
     struct Variable
     {
+        // VS2015 requires a constructor to avoid aggregate initialization
+        Variable (const String& n, Type t, bool isGlobalVar, bool isConstVar, const var& cv,
+                  int nElements = 0, Variable* pArray = nullptr, Variable* nArray = nullptr)
+           : name (n), type (t), isGlobal (isGlobalVar), isConst (isConstVar), constantValue (cv),
+             numElements (nElements), previousArray (pArray), nextArray (nArray)
+        {
+        }
+
         String name;
         Type type;
         bool isGlobal, isConst;

modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp

@@ -342,6 +342,13 @@ struct PhysicalTopologySource::Internal
     //==============================================================================
     struct DeviceInfo
     {
+        // VS2015 requires a constructor to avoid aggregate initialization
+        DeviceInfo (Block::UID buid, BlocksProtocol::TopologyIndex tidx, BlocksProtocol::BlockSerialNumber s,
+                    BlocksProtocol::VersionNumber v, BlocksProtocol::BlockName n, bool master = false)
+            : uid (buid), index (tidx), serial (s), version (v), name (n), isMaster (master)
+        {
+        }
+
         Block::UID uid {};
         BlocksProtocol::TopologyIndex index;
         BlocksProtocol::BlockSerialNumber serial;