[babl] Remove workaround for non-recursive mutexes.

[Nils Philippsen <nphilipp src gnome org>]

commit 81ef6f201164c81876028a506b00b52976041741
Author: Nils Philippsen <nils redhat com>
Date:   Fri Feb 13 13:29:13 2015 +0100

    Remove workaround for non-recursive mutexes.
    
    This workaround caused concurrency-stress-test to fail occasionally.
    Meanwhile BablMutex wraps pthread mutexes in a way that they are
    initialized as recursive.
    
    This partially reverts commit 9d2aa7d13ac421935de1e87301c48af50b0ceb59.

 babl/babl-fish-path.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/babl/babl-fish-path.c b/babl/babl-fish-path.c
index 5dc0601..bf9c520 100644
--- a/babl/babl-fish-path.c
+++ b/babl/babl-fish-path.c
@@ -300,8 +300,7 @@ babl_fish_path (const Babl *source,
     pc.fish_path = babl;
     pc.to_format = (Babl *) destination;
 
-    if (babl_in_fish_path <= 0)
-      babl_mutex_lock (babl_format_mutex);
+    babl_mutex_lock (babl_format_mutex);
     /* we hold a global lock whilerunning get_conversion_path since
      * it depends on keeping the various format.visited members in
      * a consistent state, this code path is not performance critical
@@ -312,8 +311,7 @@ babl_fish_path (const Babl *source,
     get_conversion_path (&pc, (Babl *) source, 0, max_path_length ());
 
     babl_in_fish_path--;
-    if (babl_in_fish_path <= 0)
-      babl_mutex_unlock (babl_format_mutex);
+    babl_mutex_unlock (babl_format_mutex);
     babl_free (pc.current_path);
   }