Remove more impossible checks in form filler code.

Also fix some nits and inline some calls.

Change-Id: Ie962f416b8ecd51ce05341e5511129ea0602fa8e
Reviewed-on: https://pdfium-review.googlesource.com/c/43604
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/cpdfsdk_interform.cpp b/fpdfsdk/cpdfsdk_interform.cpp
index 2cc20f9..66a52b6 100644
--- a/fpdfsdk/cpdfsdk_interform.cpp
+++ b/fpdfsdk/cpdfsdk_interform.cpp
@@ -391,12 +391,11 @@
   if (!action.GetDict())
     return true;
 
-  CPDFSDK_ActionHandler* pActionHandler = m_pFormFillEnv->GetActionHandler();
   CPDFSDK_FieldAction fa;
   fa.bModifier = false;
   fa.bShift = false;
   fa.sValue = csValue;
-  pActionHandler->DoAction_FieldJavaScript(
+  m_pFormFillEnv->GetActionHandler()->DoAction_FieldJavaScript(
       action, CPDF_AAction::KeyStroke, m_pFormFillEnv.Get(), pFormField, &fa);
   return fa.bRC;
 }
@@ -411,12 +410,11 @@
   if (!action.GetDict())
     return true;
 
-  CPDFSDK_ActionHandler* pActionHandler = m_pFormFillEnv->GetActionHandler();
   CPDFSDK_FieldAction fa;
   fa.bModifier = false;
   fa.bShift = false;
   fa.sValue = csValue;
-  pActionHandler->DoAction_FieldJavaScript(
+  m_pFormFillEnv->GetActionHandler()->DoAction_FieldJavaScript(
       action, CPDF_AAction::Validate, m_pFormFillEnv.Get(), pFormField, &fa);
   return fa.bRC;
 }