[tracker] Do not make tracker-indexer commit suicide if tracker-extract doesn't get along.

[Jürg Billeter <juergbi src gnome org>]

commit c73f47019e09c4fb24ff93c61799a737e48db578
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Apr 17 13:51:58 2009 +0200

    Do not make tracker-indexer commit suicide if tracker-extract doesn't get along.
    
    If tracker-extract fails to return the PID. extractor_pid is 0, so if
    tracker-indexer tries to kill it afterwards, it ends up killing itself.
---
 .../tracker-module-metadata-utils.c                |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/tracker-indexer/tracker-module-metadata-utils.c b/src/tracker-indexer/tracker-module-metadata-utils.c
index e4f3057..5c62b89 100644
--- a/src/tracker-indexer/tracker-module-metadata-utils.c
+++ b/src/tracker-indexer/tracker-module-metadata-utils.c
@@ -298,6 +298,11 @@ extractor_context_kill (ExtractorContext *context)
 {
 	g_message ("Attempting to kill tracker-extract with SIGKILL");
 
+	if (context->pid == 0) {
+		g_warning ("  No PID for tracker-extract");
+		return;
+	}
+
 	if (kill (context->pid, SIGKILL) == -1) {
 		const gchar *str = g_strerror (errno);