fix implementation of connect_ex so it always returns the error code rather than raising

eventlet/greenio.py

@@ -195,11 +195,11 @@ class GreenSocket(object):
         else:
             end = time.time() + self.gettimeout()
             while True:
+                try:
                     if socket_connect(fd, address):
                         return 0
                     if time.time() >= end:
                         raise socket.timeout(errno.EAGAIN)
-                try:
                     trampoline(fd, write=True, timeout=end-time.time(),
                             timeout_exc=socket.timeout(errno.EAGAIN))
                 except socket.error, ex:
@@ -589,4 +589,3 @@ def serve(sock, handle, concurrency=1000):
     connections until the existing ones complete.
     """
     pass
-