Merge branch '4.2.2-develop' of github.com:magento/magento2-phpstorm-plugin into 633-no-such-element-exception-when-creating-new-controller

Author: bohdan-harniuk

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

@@ -9,6 +9,7 @@
 import com.intellij.codeInspection.ProblemsHolder;
 import com.intellij.ide.highlighter.XmlFileType;
 import com.intellij.openapi.util.Pair;
+import com.intellij.psi.PsiDirectory;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiElementVisitor;
 import com.intellij.psi.PsiFile;
@@ -175,6 +176,11 @@ private List<Pair<String, String>> fetchModuleNamesWhereSamePluginNameUsed(
                     final PsiFile file
             ) {
                 final List<Pair<String, String>> modulesName = new ArrayList<>();
+                final PsiDirectory parentDirectory = file.getContainingDirectory();
+
+                if (parentDirectory == null) {
+                    return modulesName;
+                }
                 final String currentFileDirectory = file.getContainingDirectory().toString();
                 final String currentFileFullPath =
                         currentFileDirectory.concat(File.separator).concat(file.getName());