accept proper number style condition != as not equal operator, fdo#76777

ODF 1.2 specifies '!=' as not equal operator in <number:number-style>
<style:map> style:condition attribute. So far '<>' is written, accept
the correct operator.

Change-Id: I6087992ee35fff5c7aa52b7cec2b83b0a78dbac1

xmloff/source/style/xmlnumfi.cxx

@@ -2068,7 +2068,14 @@ void SvXMLNumFormatContext::AddCondition( const sal_Int32 nIndex )
 
         if (!bDefaultCond)
         {
-            sal_Int32 nPos = sRealCond.indexOf( '.' );
+            // Convert != to <>
+            sal_Int32 nPos = sRealCond.indexOf( "!=" );
+            if ( nPos >= 0 )
+            {
+                sRealCond = sRealCond.replaceAt( nPos, 2, "<>" );
+            }
+
+            nPos = sRealCond.indexOf( '.' );
             if ( nPos >= 0 )
             {
                 // #i8026# #103991# localize decimal separator