Better handling of CookieJar Runtime Exception (#5206)

Fixes #5187

Author: Murgeye

lib/request/connect.py

@@ -587,14 +587,9 @@ class _(dict):
 
                 if not getRequestHeader(req, HTTP_HEADER.COOKIE) and conf.cj:
                     conf.cj._policy._now = conf.cj._now = int(time.time())
-                    while True:
-                        try:
-                            cookies = conf.cj._cookies_for_request(req)
-                        except RuntimeError:    # NOTE: https://github.com/sqlmapproject/sqlmap/issues/5187
-                            time.sleep(1)
-                        else:
-                            requestHeaders += "\r\n%s" % ("Cookie: %s" % ";".join("%s=%s" % (getUnicode(cookie.name), getUnicode(cookie.value)) for cookie in cookies))
-                            break
+                    with conf.cj._cookies_lock:
+                        cookies = conf.cj._cookies_for_request(req)
+                    requestHeaders += "\r\n%s" % ("Cookie: %s" % ";".join("%s=%s" % (getUnicode(cookie.name), getUnicode(cookie.value)) for cookie in cookies))
 
                 if post is not None:
                     if not getRequestHeader(req, HTTP_HEADER.CONTENT_LENGTH) and not chunked: