Don't use placement new for MemoryBlock assignment operator in var class

modules/juce_core/containers/juce_Variant.cpp

@@ -504,7 +504,7 @@ var& var::operator= (const double v)             { type->cleanUp (value); type =
 var& var::operator= (const char* const v)        { type->cleanUp (value); type = &VariantType_String::instance; new (value.stringValue) String (v); return *this; }
 var& var::operator= (const wchar_t* const v)     { type->cleanUp (value); type = &VariantType_String::instance; new (value.stringValue) String (v); return *this; }
 var& var::operator= (const String& v)            { type->cleanUp (value); type = &VariantType_String::instance; new (value.stringValue) String (v); return *this; }
-var& var::operator= (const MemoryBlock& v)       { type->cleanUp (value); type = &VariantType_Binary::instance; new (value.binaryValue) MemoryBlock (v); return *this; }
+var& var::operator= (const MemoryBlock& v)       { type->cleanUp (value); type = &VariantType_Binary::instance; value.binaryValue = new MemoryBlock (v); return *this; }
 var& var::operator= (const Array<var>& v)        { var v2 (v); swapWith (v2); return *this; }
 var& var::operator= (ReferenceCountedObject* v)  { var v2 (v); swapWith (v2); return *this; }
 var& var::operator= (NativeFunction v)           { var v2 (v); swapWith (v2); return *this; }