closes https://github.com/assimp/assimp/issues/1758: fix compiler warning.

test/unit/utRemoveComponent.cpp

@@ -110,7 +110,7 @@ void RemoveVCProcessTest::SetUp()
     char check[sizeof(aiMaterial) == sizeof(aiMaterial) ? 10 : -1];
     check[0] = 0;
     // to remove compiler warning
-    EXPECT_TRUE( check );
+    EXPECT_EQ( 0, check[0] );
 }
 
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