[CQ] fix unchecked ops in AddToAppUtils (#8064)

Fixes unchecked operations that are unsafe **and** clutter our plugin
runs with noise.


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Author: pq

flutter-studio/src/io/flutter/utils/AddToAppUtils.java

@@ -91,7 +91,8 @@ public void modulesAdded(@NotNull Project proj, @NotNull List<? extends Module>
   }
 
   // Derived from the method in ReflectionUtil, with the addition of setAccessible().
-  public static <T> T getStaticFieldValue(@NotNull Class objectClass,
+  @Nullable
+  public static <T> T getStaticFieldValue(@NotNull Class<?> objectClass,
                                           @Nullable("null means any type") Class<T> fieldType,
                                           @NotNull @NonNls String fieldName) {
     try {
@@ -168,6 +169,7 @@ public void processAttached(@NotNull DebugProcess process) {
           PubRoot pubRoot = ((SdkAttachConfig)runConfig).pubRoot;
           Application app = ApplicationManager.getApplication();
           project.putUserData(ATTACH_IS_ACTIVE, ThreeState.fromBoolean(true));
+          if (app == null) return;
           // Note: Using block comments to preserve formatting.
           app.invokeLater( /* After the Android launch completes, */
             () -> app.executeOnPooledThread( /* but not on the EDT, */
@@ -178,12 +180,16 @@ public void processAttached(@NotNull DebugProcess process) {
 
       @Override
       public void sessionCreated(DebuggerSession session) {
-        session.getProcess().addDebugProcessListener(dpl);
+        if (session != null) {
+          session.getProcess().addDebugProcessListener(dpl);
+        }
       }
 
       @Override
       public void sessionRemoved(DebuggerSession session) {
-        session.getProcess().removeDebugProcessListener(dpl);
+        if (session != null) {
+          session.getProcess().removeDebugProcessListener(dpl);
+        }
       }
     };
   }