[PATCH] Revert "Stop starting pager recursively"

["Jörn Engel" <joern@logfs.org>]

This reverts commit 88e8f908f2b0c56f9ccf8134d8ff9f689af9cc84.

Caused a usability regression for me and foul language for my coworkers.

In particular, I commonly do a "git log", with results going through
less, find a potentially interesting commit and execute "git show
<commit>" from less.  This used to show the patch in less and no longer
does.

Manually typing "git show <commit> | less" works, but is annoying,
wasting time and usually only done after seeing the mess from the simple
invocation.
---
 pager.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pager.c b/pager.c
index 0cc75a8eee32..53670a63a7ae 100644
--- a/pager.c
+++ b/pager.c
@@ -64,7 +64,7 @@ void setup_pager(void)
 {
 	const char *pager = git_pager(isatty(1));
 
-	if (!pager || pager_in_use())
+	if (!pager)
 		return;
 
 	/*
-- 
1.9.1