fix msgb talloc context initialization

Properly initialize msgb talloc context in hnbgw and all tests, using the new
msgb_talloc_ctx_init().

test-ranap.c: since msgb talloc ctx is now in test_common_init(), remove msgb
talloc init here.

Change-Id: I807c799aff1239184728551ed77fdafa73bd683f

src/hnbgw.c

@@ -454,6 +454,7 @@ int main(int argc, char **argv)
 
 	tall_hnb_ctx = talloc_named_const(NULL, 0, "hnb_context");
 	talloc_asn1_ctx = talloc_named_const(NULL, 0, "asn1_context");
+	msgb_talloc_ctx_init(tall_hnb_ctx, 0);
 
 	g_hnb_gw = hnb_gw_create(tall_hnb_ctx);
 	g_hnb_gw->config.rnc_id = 23;

src/tests/test-ranap.c

@@ -97,8 +97,6 @@ int main(int argc, char **argv)
 
 	//asn_debug = 1;
 
-	msgb_set_talloc_ctx(talloc_named_const(NULL, 1, "msgb"));
-
 	test_common_init();
 
 	test_aper_int(1);

src/tests/test-ranap.ok

@@ -214,5 +214,5 @@ Decoded Cause Misc=115
 00 0a 00 11 00 00 01 00 29 40 0a 00 00 01 00 28 40 03 05 c2 d0 
 report
 talloc report on 'asn1_context' (total      0 bytes in   1 blocks)
-talloc report on 'msgb' (total      1 bytes in   1 blocks)
+talloc report on 'msgb' (total      0 bytes in   1 blocks)
 exit

src/tests/test_common.c

@@ -78,6 +78,7 @@ int test_common_init(void)
 {
 	int rc;
 
+	msgb_talloc_ctx_init(NULL, 0);
 	talloc_asn1_ctx = talloc_named_const(NULL, 0, "asn1_context");
 
 	rc = osmo_init_logging(&test_log_info);