SIB: Fix unittests

test/unit/utSIBImporter.cpp

@@ -52,14 +52,14 @@ using namespace ::Assimp;
 class utSIBImporter : public AbstractImportExportBase {
 public:
     virtual bool importerTest() {
-        Assimp::Importer importer;
+        Importer importer;
         const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/SIB/heffalump.sib", aiProcess_ValidateDataStructure);
         return nullptr != scene;
     }
 };
 
 TEST_F(utSIBImporter, importTest) {
-#ifndef ASSIMP_BUILD_NO_SIB_IMPORTER
+#ifdef ASSIMP_BUILD_NO_SIB_IMPORTER
     EXPECT_FALSE(importerTest());
 #else
     EXPECT_TRUE(importerTest());