openresolv: Minor spelling fixes

Upstreamed:	12cb1c1fb10df1072116ccf472f40c1bba782fc3

resolvconf.8.in

@@ -128,7 +128,7 @@ on the
 Here are some options for the above commands:-
 .Bl -tag -width indent
 .It Fl f
-Ignore non existant interfaces.
+Ignore non existent interfaces.
 Only really useful for deleting interfaces.
 .It Fl m Ar metric
 Set the metric of the interface when adding it, default of 0.

resolvconf.in

@@ -92,7 +92,7 @@ usage()
 	  -u               Run updates from our current DNS information
 
 	Options:
-	  -f               Ignore non existant interfaces
+	  -f               Ignore non existent interfaces
 	  -m metric        Give the added DNS information a metric
 	  -p               Mark the interface as private
 	  -x               Mark the interface as exclusive
@@ -884,7 +884,7 @@ export RESOLVCONF DOMAINS SEARCH NAMESERVERS LOCALNAMESERVERS
 retval=0
 
 # Run scripts in the same directory resolvconf is run from
-# in case any scripts accidently dump files in the wrong place.
+# in case any scripts accidentally dump files in the wrong place.
 cd "$_PWD"
 for script in "$LIBEXECDIR"/*; do
 	if [ -f "$script" ]; then