cp#1000044 DOC import: fProtEnabled means document is not totally read-only

Reading the spec, it seems that we have two cases here:

- if lKeyProtDoc is set and fProtEnabled is 1, then editing forms is
  allowed
- if lKeyProtDoc is set, but fProtEnabled is 0, then the document is
  totally read-only

So in the first case avoid the SetModifyPasswordHash() call to allow
form field editing.

Change-Id: Id0c48e8eb4bde75c5520a7b108fcfada51148faf

sw/qa/extras/ww8import/ww8import.cxx

@@ -243,6 +243,13 @@ DECLARE_WW8IMPORT_TEST(testBnc821208, "bnc821208.doc")
     CPPUNIT_ASSERT_EQUAL(beans::PropertyState_DEFAULT_VALUE, ePropertyState);
 }
 
+DECLARE_WW8IMPORT_TEST(testCp1000044, "cp1000044.doc")
+{
+    uno::Reference<frame::XStorable> xStorable(mxComponent, uno::UNO_QUERY);
+    // It wasn't possible to fill out this form.
+    CPPUNIT_ASSERT_EQUAL(false, bool(xStorable->isReadonly()));
+}
+
 DECLARE_WW8IMPORT_TEST(testCp1000039, "cp1000039.doc")
 {
     // This was RTL_TEXTENCODING_SYMBOL, causing "1" rendered as a placeholder rectangle.

sw/source/filter/ww8/ww8par.cxx

@@ -1947,7 +1947,9 @@ void SwWW8ImplReader::ImportDop()
         }
     }
 
-    mpDocShell->SetModifyPasswordHash(pWDop->lKeyProtDoc);
+    // Still allow editing of form fields.
+    if (!pWDop->fProtEnabled)
+        mpDocShell->SetModifyPasswordHash(pWDop->lKeyProtDoc);
 
     const SvtFilterOptions& rOpt = SvtFilterOptions::Get();
     if (rOpt.IsUseEnhancedFields())