Bug 1477707: Fix all infer errors in GeckoView. r=jchen

This fixes some errors reported by infer on GeckoView that are not related to threading.

Differential Revision: https://phabricator.services.mozilla.com/D3787

--HG--
extra : moz-landing-system : lando

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoProfile.java

@@ -802,6 +802,9 @@ public final class GeckoProfile {
 
             final INIParser parser = GeckoProfileDirectories.getProfilesINI(mMozillaDir);
             final Hashtable<String, INISection> sections = parser.getSections();
+            if (sections == null) {
+                return false;
+            }
             for (Enumeration<INISection> e = sections.elements(); e.hasMoreElements();) {
                 final INISection section = e.nextElement();
                 String name = section.getStringProperty("Name");

mobile/android/geckoview/src/main/java/org/mozilla/gecko/media/GeckoHLSDemuxerWrapper.java

@@ -119,7 +119,9 @@ public final class GeckoHLSDemuxerWrapper {
         assertTrue(callback != null);
         try {
             mPlayer = GeckoPlayerFactory.getPlayer(id);
-            mPlayer.addDemuxerWrapperCallbackListener(callback);
+            if (mPlayer != null) {
+                mPlayer.addDemuxerWrapperCallbackListener(callback);
+            }
         } catch (Exception e) {
             Log.e(LOGTAG, "Constructing GeckoHLSDemuxerWrapper ... error", e);
             callback.onError(BaseHlsPlayer.DemuxerError.UNKNOWN.code());

mobile/android/geckoview/src/main/java/org/mozilla/gecko/process/GeckoProcessManager.java

@@ -175,7 +175,10 @@ public final class GeckoProcessManager extends IProcessManager.Stub {
 
     public void crashChild() {
         try {
-            mConnections.get("tab").bind().crash();
+            IChildProcess childProcess = mConnections.get("tab").bind();
+            if (childProcess != null) {
+                childProcess.crash();
+            }
         } catch (RemoteException e) {
         }
     }

mobile/android/geckoview/src/main/java/org/mozilla/geckoview/GeckoInputConnection.java

@@ -210,7 +210,10 @@ import java.lang.reflect.Proxy;
                 }
                 break;
             case android.R.id.paste:
-                commitText(Clipboard.getText(view.getContext()), 1);
+                String text = Clipboard.getText(view.getContext());
+                if (text != null) {
+                    commitText(text, 1);
+                }
                 break;
             case android.R.id.copy:
                 // Copy the current selection or the empty string if nothing is selected.