Fixed buffer free problem when sending between threads in the same process.

Upstream-Status: Not Applicable

Signed-off-by: Huimin She <huimin.she@enea.com>

---
diff -rup a/liblinx/linx.c b/liblinx/linx.c
--- a/liblinx/linx.c	2014-04-17 13:40:30.000000000 +0200
+++ b/liblinx/linx.c	2014-07-24 14:22:30.264648751 +0200
@@ -711,7 +711,10 @@ int linx_send(LINX * linx, union LINX_SI
 	if (ret == 0) {
 		sig_adm->sndrcv = sndrcv;
 	}
-	adm_free_buf(linx, sig_adm);
+	if (ret != 1) {
+                /* Don't free signals sent back to itself, they are needed later! */
+                adm_free_buf(linx, sig_adm);
+	}
 out:
 	/* Take signal pointer from user. */
 	*sig = LINX_NIL;