fix spelling in API docu, command reply, logging, descriptions

sections: ctrl, gb, gsm, vty

Change-Id: Iac211b5cd8504da36b699777b95a2448dd7c3e70

src/ctrl/control_if.c

@@ -269,7 +269,7 @@ int ctrl_cmd_handle(struct ctrl_handle *ctrl, struct ctrl_cmd *cmd,
 err:
 	if (!cmd->reply) {
 		if (ret == CTRL_CMD_ERROR) {
-			cmd->reply = "An error has occured.";
+			cmd->reply = "An error has occurred.";
 			LOGP(DLCTRL, LOGL_NOTICE,
 			     "%s: cmd->reply has not been set (ERROR).\n",
 			     cmd->variable);

src/gb/gprs_ns.c

@@ -138,7 +138,7 @@ enum ns_stat {
 };
 
 static const struct osmo_stat_item_desc nsvc_stat_description[] = {
-	{ "alive.delay", "ALIVE reponse time        ", "ms", 16, 0 },
+	{ "alive.delay", "ALIVE response time        ", "ms", 16, 0 },
 };
 
 static const struct osmo_stat_item_group_desc nsvc_statg_desc = {

src/gsm/auth_core.c

@@ -180,7 +180,7 @@ int osmo_auth_gen_vec(struct osmo_auth_vector *vec,
  * based on the permanent subscriber data, a random value as well as the
  * AUTS and RAND values returned by the SIM/MS.  This special variant is
  * needed if the sequence numbers between MS and AUC have for some
- * reason become diffrent.
+ * reason become different.
  */
 int osmo_auth_gen_vec_auts(struct osmo_auth_vector *vec,
 			   struct osmo_sub_auth_data *aud,

src/gsm/lapd_core.c

@@ -861,7 +861,7 @@ static int lapd_rx_u(struct msgb *msg, struct lapd_msg_ctx *lctx)
 				if (memcmp(dl->cont_res->data, msg->data,
 								length)) {
 					LOGP(DLLAPD, LOGL_INFO, "Another SABM "
-					     "with diffrent content - "
+					     "with different content - "
 					     "ignoring! (dl=%p)\n", dl);
 					msgb_free(msg);
 					return 0;

src/vty/logging_vty.c

@@ -342,7 +342,7 @@ DEFUN(show_alarms,
 
 gDEFUN(cfg_description, cfg_description_cmd,
 	"description .TEXT",
-	"Save human-readable decription of the object\n"
+	"Save human-readable description of the object\n"
 	"Text until the end of the line\n")
 {
 	char **dptr = vty->index_sub;