fdo#70198: sw: don't truncate Time values on 32bit platforms

SwDoc::SetFixFields() uses sal_uLong to store Time.GetTime() which needs
64 bits.

Also fix same problem on Time fields in HTML import.

(regression from 9830fd36db)

Change-Id: I5d0388cbc364e1f9dfb60ff9e83c7d2f101c69d8

sw/source/core/doc/docfld.cxx

@@ -1986,7 +1986,8 @@ void SwDoc::SetFixFields( bool bOnlyTimeDate, const DateTime* pNewDateTime )
 {
     sal_Bool bIsModified = IsModified();
 
-    sal_uLong nDate, nTime;
+    sal_Int32 nDate;
+    sal_Int64 nTime;
     if( pNewDateTime )
     {
         nDate = pNewDateTime->GetDate();

sw/source/filter/html/htmlfld.cxx

@@ -327,7 +327,8 @@ void SwHTMLParser::NewField()
     case RES_TIMEFLD:
         {
             sal_uLong nNumFmt = 0;
-            sal_uLong nTime = Time( Time::SYSTEM ).GetTime(), nDate = Date( Date::SYSTEM ).GetDate();
+            sal_Int64 nTime = Time( Time::SYSTEM ).GetTime();
+            sal_Int32 nDate = Date( Date::SYSTEM ).GetDate();
             sal_uInt16 nSub = 0;
             sal_Bool bValidFmt = sal_False;
             HTMLNumFmtTblEntry * pFmtTbl;
@@ -337,7 +338,7 @@ void SwHTMLParser::NewField()
                 nSub = DATEFLD;
                 pFmtTbl = aHTMLDateFldFmtTable;
                 if( !aValue.isEmpty() )
-                    nDate = (sal_uLong)aValue.toInt32();
+                    nDate = aValue.toInt32();
             }
             else
             {