CMFileManager: Make groups command optional

Groups command command is causing problems on some implementations (maybe toolbox?)
which don't recognize the root AID and returns an error, and avoid to get root access.

Patchset 2: Fix typo

Change-Id: Idc17b18c34b8be263a1739dbad2921f60101fa09

src/com/cyanogenmod/filemanager/console/shell/ShellConsole.java

@@ -299,12 +299,20 @@ public final void alloc() throws ConsoleAllocException {
                     getExecutableFactory().newCreator().createIdentityExecutable();
             execute(identityCmd);
             this.mIdentity = identityCmd.getResult();
-            if (this.mIdentity.getGroups().size() == 0) {
-                //Try with groups
-                GroupsExecutable groupsCmd =
-                        getExecutableFactory().newCreator().createGroupsExecutable();
-                execute(groupsCmd);
-                this.mIdentity.setGroups(groupsCmd.getResult());
+            // Identity command is required for root console detection,
+            // but Groups command is not used for now. Also, this command is causing
+            // problems on some implementations (maybe toolbox?) which don't
+            // recognize the root AID and returns an error. Safely ignore on error.
+            try {
+                if (this.mIdentity.getGroups().size() == 0) {
+                    //Try with groups
+                    GroupsExecutable groupsCmd =
+                            getExecutableFactory().newCreator().createGroupsExecutable();
+                    execute(groupsCmd);
+                    this.mIdentity.setGroups(groupsCmd.getResult());
+                }
+            } catch (Exception ex) {
+                Log.w(TAG, "Groups command failed. Ignored.", ex);
             }
 
         } catch (Exception ex) {