Fixed: Correct memory leak found by cppcheck

code/MaterialSystem.cpp

@@ -484,6 +484,7 @@ aiReturn aiMaterial::AddBinaryProperty (const void* pInput,
         try {
             ppTemp = new aiMaterialProperty*[mNumAllocated];
         } catch (std::bad_alloc&) {
+            delete pcNew;
             return AI_OUTOFMEMORY;
         }