rename buildError function

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

error.go

@@ -165,7 +165,7 @@ func generateGopherErrorResponseFromCode(code ErrorCode) []byte {
 
 /* Generates gopher protocol compatible error response for response code */
 func generateGopherErrorResponse(code ErrorResponseCode) []byte {
-    return buildError(code.String())
+    return buildErrorLine(code.String())
 }
 
 /* Error response code to string */

format.go

@@ -160,7 +160,8 @@ var FileExtMap = map[string]ItemType{
     ".webm":         TypeVideo,
 }
 
-func buildError(selector string) []byte {
+/* Build error line */
+func buildErrorLine(selector string) []byte {
     ret := string(TypeError)
     ret += selector + DOSLineEnd
     ret += LastLine