Cleanups

Don't use DBUG library for struct st_my_thread_var to make code less complicated.


Docs/manual.texi:
  Cleanup
acinclude.m4:
  Search after openssl in /usr/local
client/mysql.cc:
  Fix prompt
client/mysqladmin.c:
  Cleanup
client/mysqltest.c:
  Cleanup
include/my_pthread.h:
  Move thread variables to the right location
include/my_sys.h:
  Move thread variables to the right location
include/mysql.h:
  Clean up client prototypes
libmysql/libmysql.c:
  Clean up client prototypes
mysys/my_static.h:
  Cleanup
mysys/my_thr_init.c:
  Don't use DBUG library for struct st_my_thread_var to make code less complicated
sql/item_cmpfunc.cc:
  Small optimization
sql/net_pkg.cc:
  Cleanup
sql/sql_parse.cc:
  Allow VARCHAR(0)

1 files changed, 3 insertions, 2 deletions

diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc
index 0c83698e60a..bb773af1ddf 100644
--- a/sql/item_cmpfunc.cc
+++ b/sql/item_cmpfunc.cc
@@ -790,8 +790,9 @@ String *Item_func_coalesce::val_str(String *str)
   null_value=0;
   for (uint i=0 ; i < arg_count ; i++)
   {
-    if (args[i]->val_str(str) != NULL)
-      return args[i]->val_str(str);
+    String *res;
+    if ((res=args[i]->val_str(str)))
+      return res;
   }
   null_value=1;
   return 0;