Fix spelling errors in source code
--- a/src/stm8/gen.c
+++ b/src/stm8/gen.c
@@ -1884,7 +1884,7 @@
     {
       if (!regalloc_dry_run)
         {
-          wassertl (0, "genCopy failed to completly copy operands.");
+          wassertl (0, "genCopy failed to completely copy operands.");
           fprintf (stderr, "%d bytes left.\n", size);
           fprintf (stderr, "left type %d source type %d\n", result->type, source->type);
           for (i = 0; i < n ; i++)
