ATLAS-1285: fix for issues flagged by Coverity scan

repository/src/main/java/org/apache/atlas/repository/store/bootstrap/AtlasTypeDefStoreInitializer.java

@@ -316,13 +316,12 @@ public class AtlasTypeDefStoreInitializer {
         @Override
         public void applyPatch(TypeDefPatch patch) throws AtlasBaseException {
             String           typeName = patch.getTypeName();
+            AtlasBaseTypeDef typeDef  = typeRegistry.getTypeDefByName(typeName);
 
-            if (!typeRegistry.isRegisteredType(typeName)) {
+            if (typeDef == null) {
                 throw new AtlasBaseException(AtlasErrorCode.PATCH_FOR_UNKNOWN_TYPE, patch.getAction(), typeName);
             }
 
-            AtlasBaseTypeDef typeDef = typeRegistry.getTypeDefByName(typeName);
-
             if (isPatchApplicable(patch, typeDef)) {
                 if (typeDef.getClass().equals(AtlasEntityDef.class)) {
                     AtlasEntityDef updatedDef = new AtlasEntityDef((AtlasEntityDef)typeDef);

webapp/src/test/java/org/apache/atlas/web/resources/TypesJerseyResourceIT.java

@@ -52,6 +52,7 @@ import java.util.List;
 
 import static org.apache.atlas.typesystem.types.utils.TypesUtil.createOptionalAttrDef;
 import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertNotNull;
 import static org.testng.Assert.fail;
 
 /**
@@ -134,8 +135,10 @@ public class TypesJerseyResourceIT extends BaseResourceIT {
         assertEquals(typesUpdated.size(), 1);
         Assert.assertTrue(typesUpdated.contains(typeDefinition.typeName));
 
-        HierarchicalTypeDefinition<ClassType>
-                updatedType = serviceClient.getType(typeDefinition.typeName).classTypesAsJavaList().get(0);
+        TypesDef updatedTypeDef = serviceClient.getType(typeDefinition.typeName);
+        assertNotNull(updatedTypeDef);
+
+        HierarchicalTypeDefinition<ClassType> updatedType = updatedTypeDef.classTypesAsJavaList().get(0);
         assertEquals(updatedType.attributeDefinitions.length, 2);
     }