Fixed optimization under 6809.

Author: spotlessmind1975

ugbc/src/targets/d32/_optimizer.c

@@ -892,6 +892,7 @@ static void basic_peephole(Environment * _environment, POBuffer buf[LOOK_AHEAD],
 
     if( po_buf_match(buf[0], " LDB *", v1)
     &&  po_buf_match(buf[1], " LDB *", v2)
+    &&  strstr( v2->str, "," ) == NULL
         ) {
         optim(buf[0], RULE "(LDB,LDB)->(LDB)", NULL );
         ++_environment->removedAssemblyLines;