[Bugfix] open_plugin_browse() not showing plugins

rockbox_browse() overrides the desired dirfilter with
global_settings.dirfilter if you aren't using one of the
SHOW_ modes > NUM_FILTER_MODES (which come with their own sideeffects)

add flag BROWSE_DIRFILTER to
override global_settings.dirfilter with browse_context.dirfilter

add ability to set tc->browse to NULL to exit dirbrowse immediately

Change-Id: I2f40d394f9dc0864b2041293eda219f7436a7bf0

1 files changed, 2 insertions, 2 deletions

diff --git a/apps/tree.c b/apps/tree.c
index 5dd88c8e9d..b9b257e093 100644
--- a/apps/tree.c
+++ b/apps/tree.c
@@ -652,7 +652,7 @@ static int dirbrowse(void)
         return GO_TO_PREVIOUS;  /* No files found for rockbox_browse() */
     }
 
-    while(1) {
+    while(tc.browse) {
         bool restore = false;
         if (tc.dirlevel < 0)
             tc.dirlevel = 0; /* shouldnt be needed.. this code needs work! */
@@ -1018,7 +1018,7 @@ int rockbox_browse(struct browse_context *browse)
     }
     else
     {
-        if (dirfilter != SHOW_ID3DB)
+        if (dirfilter != SHOW_ID3DB && (browse->flags & BROWSE_DIRFILTER) == 0)
             tc.dirfilter = &global_settings.dirfilter;
         tc.browse = browse;
         strmemccpy(current, browse->root, MAX_PATH);