run go1.19 gofmt and make adjustments as needed

(Go 1.19 expanded doc comment syntax)

util/chainlock/chainlock.go

@@ -3,13 +3,12 @@
 //
 // Intended Usage
 //
-//   defer s.lock().unlock()
-//   // drop lock while waiting for wait group
-//   func() {
-//	     defer a.l.Unlock().Lock()
-//	     fssesDone.Wait()
-//	 }()
-//
+//	  defer s.lock().unlock()
+//	  // drop lock while waiting for wait group
+//	  func() {
+//		     defer a.l.Unlock().Lock()
+//		     fssesDone.Wait()
+//		 }()
 package chainlock
 
 import "sync"

util/nodefault/nodefault.go

@@ -7,26 +7,25 @@
 //
 // Example:
 //
-//  type Config struct {
-//      // This field must be set to a non-nil value,
-//      // forcing the caller to make their mind up
-//      // about this field.
-//      CriticalSetting   *nodefault.Bool
-//  }
+//	type Config struct {
+//	    // This field must be set to a non-nil value,
+//	    // forcing the caller to make their mind up
+//	    // about this field.
+//	    CriticalSetting   *nodefault.Bool
+//	}
 //
 // An function that takes such a Config should _not_ check for nil-ness:
 // and instead unconditionally dereference:
 //
-//  func f(c Config) {
-//      if (c.CriticalSetting) { }
-//  }
+//	func f(c Config) {
+//	    if (c.CriticalSetting) { }
+//	}
 //
 // If the caller of f forgot to specify the .CriticalSetting
 // field, the Go runtime will issue a nil-pointer deref panic
 // and it'll be clear that the caller did not read the docs of Config.
 //
-//  f(Config{}) // crashes
-//
-//  f Config{ CriticalSetting: &nodefault.Bool{B: false}} // doesn't crash
+//	f(Config{}) // crashes
 //
+//	f Config{ CriticalSetting: &nodefault.Bool{B: false}} // doesn't crash
 package nodefault