fix bugs.

coreapi/linphonecall.c

@@ -473,6 +473,7 @@ LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddr
 	linphone_call_init_common(call,from,to);
 	_linphone_call_params_copy(&call->params,params);
 	sal_op_set_custom_header(call->op,call->params.custom_headers);
+	call->params.custom_headers=NULL;
 	
 	if (linphone_core_get_firewall_policy(call->core) == LinphonePolicyUseIce) {
 		call->ice_session = ice_session_new();

coreapi/linphonecore_jni.cc

@@ -1694,7 +1694,7 @@ extern "C" void Java_org_linphone_core_LinphoneChatMessageImpl_addCustomHeader(J
 	const char *value=env->GetStringUTFChars(jheader_value,NULL);
 	linphone_chat_message_add_custom_header((LinphoneChatMessage*)ptr,name,value);
 	env->ReleaseStringUTFChars(jheader_name, name);
-	env->ReleaseStringUTFChars(jheader_name, name);
+	env->ReleaseStringUTFChars(jheader_value, value);
 }
 
 extern "C" jstring Java_org_linphone_core_LinphoneChatMessageImpl_getExternalBodyUrl(JNIEnv*  env
@@ -1876,7 +1876,7 @@ extern "C" jstring Java_org_linphone_core_LinphoneCallParamsImpl_getCustomHeader
 	return header_value ? env->NewStringUTF(header_value) : NULL;
 }
 
-extern "C" void Java_org_linphone_core_LinphoneCallParamsImpl_setCustomHeader(JNIEnv *env, jobject thiz, jlong lcp, jstring jheader_name, jstring jheader_value){
+extern "C" void Java_org_linphone_core_LinphoneCallParamsImpl_addCustomHeader(JNIEnv *env, jobject thiz, jlong lcp, jstring jheader_name, jstring jheader_value){
 	const char* header_name=env->GetStringUTFChars(jheader_name, NULL);
 	const char* header_value=env->GetStringUTFChars(jheader_value, NULL);
 	linphone_call_params_add_custom_header((LinphoneCallParams*)lcp,header_name,header_value);