Fix possible NPE in function run configuration producer (#4583)

* Fix possible NPE in function run configuration producer

* Fix checkstyle

Author: Flanker32

PluginsAndFeatures/azure-toolkit-for-intellij/src/com/microsoft/intellij/runner/functions/FunctionRunConfigurationProducer.java

@@ -55,17 +55,17 @@ public ConfigurationFactory getConfigurationFactory() {
     }
 
     @Override
-    protected boolean setupConfigurationFromContext(AzureRunConfigurationBase configuration, ConfigurationContext context, Ref ref) {
-        if (!(configuration instanceof FunctionRunConfiguration || configuration instanceof FunctionDeployConfiguration)) {
+    protected boolean setupConfigurationFromContext(AzureRunConfigurationBase runConfigurationBase, ConfigurationContext context, Ref ref) {
+        if (!(runConfigurationBase instanceof FunctionRunConfiguration || runConfigurationBase instanceof FunctionDeployConfiguration)) {
             return false;
         }
-
         final Location contextLocation = context.getLocation();
         assert contextLocation != null;
         Location<PsiMethod> methodLocation = getAzureFunctionMethods(contextLocation);
         if (methodLocation == null) {
             return false;
         }
+        AzureRunConfigurationBase configuration = runConfigurationBase;
         if (configuration instanceof FunctionDeployConfiguration) {
             final RunManagerEx manager = RunManagerEx.getInstanceEx(context.getProject());
             // since deploy configuration doesn't support, we need to create a FunctionRunConfiguration
@@ -85,6 +85,8 @@ protected boolean setupConfigurationFromContext(AzureRunConfigurationBase config
             final Module module = findModule(runConfiguration, contextModule);
             if (module != null) {
                 runConfiguration.initializeDefaults(module);
+            } else {
+                return false;
             }
         }
         if (StringUtils.isBlank(configuration.getName())) {