Fix build with !USE_WIDE_UPPER_LOWER

The placement of the ifdef blocks in formatting.c was pretty bogus, so
the code failed to compile if USE_WIDE_UPPER_LOWER was not defined.
Reported-by: Peter Geoghegan <pg@bowt.ie>
Reported-by: Noah Misch <noah@leadboat.com>

src/backend/utils/adt/formatting.c

@@ -1528,7 +1528,6 @@ str_tolower(const char *buff, size_t nbytes, Oid collid)
 	{
 		result = asc_tolower(buff, nbytes);
 	}
-#ifdef USE_WIDE_UPPER_LOWER
 	else
 	{
 		pg_locale_t mylocale = 0;
@@ -1566,6 +1565,7 @@ str_tolower(const char *buff, size_t nbytes, Oid collid)
 		else
 #endif
 		{
+#ifdef USE_WIDE_UPPER_LOWER
 			if (pg_database_encoding_max_length() > 1)
 			{
 				wchar_t    *workspace;
@@ -1603,8 +1603,8 @@ str_tolower(const char *buff, size_t nbytes, Oid collid)
 				wchar2char(result, workspace, result_size, mylocale);
 				pfree(workspace);
 			}
-#endif							/* USE_WIDE_UPPER_LOWER */
 			else
+#endif							/* USE_WIDE_UPPER_LOWER */
 			{
 				char	   *p;
 
@@ -1652,7 +1652,6 @@ str_toupper(const char *buff, size_t nbytes, Oid collid)
 	{
 		result = asc_toupper(buff, nbytes);
 	}
-#ifdef USE_WIDE_UPPER_LOWER
 	else
 	{
 		pg_locale_t mylocale = 0;
@@ -1690,6 +1689,7 @@ str_toupper(const char *buff, size_t nbytes, Oid collid)
 		else
 #endif
 		{
+#ifdef USE_WIDE_UPPER_LOWER
 			if (pg_database_encoding_max_length() > 1)
 			{
 				wchar_t    *workspace;
@@ -1727,8 +1727,8 @@ str_toupper(const char *buff, size_t nbytes, Oid collid)
 				wchar2char(result, workspace, result_size, mylocale);
 				pfree(workspace);
 			}
-#endif							/* USE_WIDE_UPPER_LOWER */
 			else
+#endif							/* USE_WIDE_UPPER_LOWER */
 			{
 				char	   *p;
 
@@ -1777,7 +1777,6 @@ str_initcap(const char *buff, size_t nbytes, Oid collid)
 	{
 		result = asc_initcap(buff, nbytes);
 	}
-#ifdef USE_WIDE_UPPER_LOWER
 	else
 	{
 		pg_locale_t mylocale = 0;
@@ -1815,6 +1814,7 @@ str_initcap(const char *buff, size_t nbytes, Oid collid)
 		else
 #endif
 		{
+#ifdef USE_WIDE_UPPER_LOWER
 			if (pg_database_encoding_max_length() > 1)
 			{
 				wchar_t    *workspace;
@@ -1864,8 +1864,8 @@ str_initcap(const char *buff, size_t nbytes, Oid collid)
 				wchar2char(result, workspace, result_size, mylocale);
 				pfree(workspace);
 			}
-#endif							/* USE_WIDE_UPPER_LOWER */
 			else
+#endif							/* USE_WIDE_UPPER_LOWER */
 			{
 				char	   *p;