BUG/MINOR: log: The log of quotted capture header has been terminated by 2 quotes.

Julien Vehent repport that the log format '%{+Q}hr' display the value
termnated by two chars '"' like this: '"value""'. This patch just remove
the second quote.

This bug is old but 1.5-specific but users of older 1.5 versions may be
interested in a backport.
diff --git a/src/log.c b/src/log.c
index 046294e..3ab40f9 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1420,8 +1420,6 @@
 					if (tmp->options & LOG_OPT_QUOTE)
 						LOGCHAR('"');
 					last_isspace = 0;
-					if (tmp->options & LOG_OPT_QUOTE)
-						LOGCHAR('"');
 				}
 				break;