Workaround for old Visual Studio compatibility

modules/juce_audio_processors/processors/juce_AudioProcessorGraph.cpp

@@ -370,9 +370,9 @@ struct RenderSequenceBuilder
         void setAssignedToNonExistentNode() noexcept            { channel = { anonNodeID(), 0 }; }
 
     private:
-        static constexpr NodeID anonNodeID() { return NodeID (0x7ffffffd); }
-        static constexpr NodeID zeroNodeID() { return NodeID (0x7ffffffe); }
-        static constexpr NodeID freeNodeID() { return NodeID (0x7fffffff); }
+        static NodeID anonNodeID() { return NodeID (0x7ffffffd); }
+        static NodeID zeroNodeID() { return NodeID (0x7ffffffe); }
+        static NodeID freeNodeID() { return NodeID (0x7fffffff); }
     };
 
     Array<AssignedBuffer> audioBuffers, midiBuffers;

modules/juce_audio_processors/processors/juce_AudioProcessorGraph.h

@@ -60,8 +60,8 @@ public:
     /** Each node in the graph has a UID of this type. */
     struct NodeID
     {
-        constexpr NodeID() {}
-        constexpr explicit NodeID (uint32 i) : uid (i) {}
+        NodeID() {}
+        explicit NodeID (uint32 i) : uid (i) {}
 
         uint32 uid = 0;