dnsapi: Remove the critical section around res_query on Linux.

[Hans Leidekker]

glibc's resolver supports threads since 2.3.2, released in 2003.
Fixes http://bugs.winehq.org/show_bug.cgi?id=24180
---
 dlls/dnsapi/query.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/dlls/dnsapi/query.c b/dlls/dnsapi/query.c
index 6014465..f940078 100644
--- a/dlls/dnsapi/query.c
+++ b/dlls/dnsapi/query.c
@@ -52,6 +52,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(dnsapi);
 
 #ifdef HAVE_RESOLV
 
+#ifndef __linux__
 static CRITICAL_SECTION resolver_cs;
 static CRITICAL_SECTION_DEBUG resolver_cs_debug =
 {
@@ -64,6 +65,10 @@ static CRITICAL_SECTION resolver_cs = { &resolver_cs_debug, -1, 0, 0, 0, 0 };
 
 #define LOCK_RESOLVER()     do { EnterCriticalSection( &resolver_cs ); } while (0)
 #define UNLOCK_RESOLVER()   do { LeaveCriticalSection( &resolver_cs ); } while (0)
+#else
+#define LOCK_RESOLVER()
+#define UNLOCK_RESOLVER()
+#endif
 
 /* call res_init() just once because of a bug in Mac OS X 10.4 */
 /* call once per thread on systems that have per-thread _res */
-- 
1.7.0.4