all: Correct spelling in comments

Skip-check: authors pr-build-mac

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3056

lib/osutil/atomic.go

@@ -20,7 +20,7 @@ var (
 )
 
 // An AtomicWriter is an *os.File that writes to a temporary file in the same
-// directory as the final path. On successfull Close the file is renamed to
+// directory as the final path. On successful Close the file is renamed to
 // it's final path. Any error on Write or during Close is accumulated and
 // returned on Close, so a lazy user can ignore errors until Close.
 type AtomicWriter struct {

lib/osutil/ping.go

@@ -14,7 +14,7 @@ import (
 )
 
 // TCPPing returns the duration required to establish a TCP connection
-// to the given host. ICMP packets require root priviledges, hence why we use
+// to the given host. ICMP packets require root privileges, hence why we use
 // tcp.
 func TCPPing(address string) (time.Duration, error) {
 	start := time.Now()

lib/osutil/rlimit_unix.go

@@ -10,7 +10,7 @@ package osutil
 
 import "syscall"
 
-// MaximizeOpenFileLimit tries to set the resoure limit RLIMIT_NOFILE (number
+// MaximizeOpenFileLimit tries to set the resource limit RLIMIT_NOFILE (number
 // of open file descriptors) to the max (hard limit), if the current (soft
 // limit) is below the max. Returns the new (though possibly unchanged) limit,
 // or an error if it could not be changed.
@@ -35,7 +35,7 @@ func MaximizeOpenFileLimit() (int, error) {
 
 	// If the set succeeded, perform a new get to see what happened. We might
 	// have gotten a value lower than the one in lim.Max, if lim.Max was
-	// something that indiciated "unlimited" (i.e. intmax).
+	// something that indicated "unlimited" (i.e. intmax).
 	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &lim); err != nil {
 		// We don't really know the correct value here since Getrlimit
 		// mysteriously failed after working once... Shouldn't ever happen, I