Replace NULL with nullptr

Also fixed some lines that were too long, and a few other minor
details.

Change-Id: I6efba5fb6e03eb5d0a300fddb2a75bf8e2f175cb
diff --git a/compiler/dex/pass_driver_me.h b/compiler/dex/pass_driver_me.h
index 94eef22..cbe4a02 100644
--- a/compiler/dex/pass_driver_me.h
+++ b/compiler/dex/pass_driver_me.h
@@ -88,7 +88,7 @@
   }
 
   bool RunPass(const Pass* pass, bool time_split) OVERRIDE {
-    // Paranoid: c_unit and pass cannot be nullptr, and the pass should have a name
+    // Paranoid: c_unit and pass cannot be null, and the pass should have a name.
     DCHECK(pass != nullptr);
     DCHECK(pass->GetName() != nullptr && pass->GetName()[0] != 0);
     CompilationUnit* c_unit = pass_me_data_holder_.c_unit;
@@ -211,8 +211,9 @@
    * @param settings_to_fill Fills the options to contain the mapping of name of option to the new
    * configuration.
    */
-  static void FillOverriddenPassSettings(const PassManagerOptions* options, const char* pass_name,
-                                         SafeMap<const std::string, const OptionContent>& settings_to_fill) {
+  static void FillOverriddenPassSettings(
+      const PassManagerOptions* options, const char* pass_name,
+      SafeMap<const std::string, const OptionContent>& settings_to_fill) {
     const std::string& settings = options->GetOverriddenPassOptions();
     const size_t settings_len = settings.size();