Fix thinko in comment.

src/port/pgstrcasecmp.c

@@ -16,7 +16,7 @@
  *
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/port/pgstrcasecmp.c,v 1.7 2006/03/05 15:59:10 momjian Exp $
+ * $PostgreSQL: pgsql/src/port/pgstrcasecmp.c,v 1.8 2006/10/07 21:48:43 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -94,7 +94,7 @@ pg_strncasecmp(const char *s1, const char *s2, size_t n)
  * Fold a character to upper case.
  *
  * Unlike some versions of toupper(), this is safe to apply to characters
- * that aren't upper case letters.  Note however that the whole thing is
+ * that aren't lower case letters.  Note however that the whole thing is
  * a bit bogus for multibyte character sets.
  */
 unsigned char
@@ -111,7 +111,7 @@ pg_toupper(unsigned char ch)
  * Fold a character to lower case.
  *
  * Unlike some versions of tolower(), this is safe to apply to characters
- * that aren't lower case letters.  Note however that the whole thing is
+ * that aren't upper case letters.  Note however that the whole thing is
  * a bit bogus for multibyte character sets.
  */
 unsigned char