Merge pull request #183 from magento/182-fix-null-pointer-excepiton-in-plugin-declaration-inspection

Fixed null pointer exception in the PluginDeclarationInspection

Author: Vitaliy

src/com/magento/idea/magento2plugin/inspections/xml/PluginDeclarationInspection.java

@@ -95,6 +95,9 @@ public void visitFile(PsiFile file) {
                         for (Pair<String, String> moduleEntry: modulesWithSamePluginName) {
                             String scope = moduleEntry.getFirst();
                             String moduleName = moduleEntry.getSecond();
+                            if (scope == null || moduleName == null) {
+                                continue;
+                            }
                             String problemKey = pluginTypeKey.concat(Package.VENDOR_MODULE_NAME_SEPARATOR)
                                     .concat(moduleName).concat(Package.VENDOR_MODULE_NAME_SEPARATOR).concat(scope);
                             if (!pluginProblems.containsKey(problemKey)){