Minor cleanup.

Change error printing to be consistent with
65a04fa.

error.go

@@ -24,7 +24,7 @@ const (
 	FormatUnavailable  ErrorCode = C.GLFW_FORMAT_UNAVAILABLE  // The clipboard did not contain data in the requested format.
 )
 
-// GlfwError holds error code and description.
+// GLFWError holds error code and description.
 type GLFWError struct {
 	Code ErrorCode
 	Desc string
@@ -33,7 +33,7 @@ type GLFWError struct {
 // Note: There are many cryptic caveats to proper error handling here.
 // See: https://github.com/go-gl/glfw3/pull/86
 
-// Holds the value of the last error
+// Holds the value of the last error.
 var lastError = make(chan *GLFWError, 1)
 
 //export goErrorCB
@@ -43,7 +43,7 @@ func goErrorCB(code C.int, desc *C.char) {
 	select {
 	case lastError <- err:
 	default:
-		fmt.Printf("GLFW: An uncaught error has occurred: %d -> %s\n", err.Code, err.Desc)
+		fmt.Println("GLFW: An uncaught error has occurred:", err)
 		fmt.Println("GLFW: Please report this bug in the Go package immediately.")
 	}
 }