netpfil: Correct some typos in source code comments

- s/occured/occurred/
- s/the the/the/

MFC after:	3 days

sys/netpfil/ipfilter/netinet/fil.c

@@ -7360,7 +7360,7 @@ ipf_token_expire(ipf_main_softc_t *softc)
 /* Loop through all of the existing tokens and call deref to see if they    */
 /* can be freed. Normally a function like this might just loop on           */
 /* ipf_token_head but there is a chance that a token might have a ref count */
-/* of greater than one and in that case the the reference would drop twice  */
+/* of greater than one and in that case the reference would drop twice      */
 /* by code that is only entitled to drop it once.                           */
 /* ------------------------------------------------------------------------ */
 static void

sys/netpfil/ipfilter/netinet/ip_fil.h

@@ -833,7 +833,7 @@ typedef	struct	frentry {
 #define	FR_STATESYNC	0x1000000	/* synchronize state to slave */
 #define	FR_COPIED	0x2000000	/* copied from user space */
 #define	FR_INACTIVE	0x4000000	/* only used when flush'ing rules */
-#define	FR_NOMATCH	0x8000000	/* no match occured */
+#define	FR_NOMATCH	0x8000000	/* no match occurred */
 		/*	0x10000000 	FF_LOGPASS */
 		/*	0x20000000 	FF_LOGBLOCK */
 		/*	0x40000000 	FF_LOGNOMATCH */

sys/netpfil/ipfilter/netinet/ip_state.c

@@ -1904,7 +1904,7 @@ ipf_tcpoptions(ipf_state_softc_t *softs, fr_info_t *fin, tcphdr_t *tcp,
 
 			/*
 			 * Extract the TCP options we are interested in out of
-			 * the header and store them in the the tcpdata struct.
+			 * the header and store them in the tcpdata struct.
 			 */
 			switch (opt)
 			{

sys/netpfil/ipfw/ip_fw_dynamic.c

@@ -1851,7 +1851,7 @@ dyn_get_parent_state(const struct ipfw_flow_id *pkt, uint32_t zoneid,
 	/*
 	 * We must exit from critical section because the following code
 	 * can acquire bucket mutex.
-	 * We rely on the the 'count' field. The state will not expire
+	 * We rely on the 'count' field. The state will not expire
 	 * until it has some child states, i.e. 'count' field is not zero.
 	 * Return state pointer, it will be used by child states as parent.
 	 */