fix error strings

common/block.go

@@ -18,9 +18,9 @@ import (
 
 // Error returned if a Producer has run to its end.
 var (
-	ErrNoMoreBlocks           = errors.New("No more blocks.")
-	ErrMapContentSizeMismatch = errors.New("Content size does not match.")
-	ErrBlockTruncated         = errors.New("Block is truncated.")
+	ErrNoMoreBlocks           = errors.New("no more blocks")
+	ErrMapContentSizeMismatch = errors.New("content size does not match")
+	ErrBlockTruncated         = errors.New("block is truncated")
 )
 
 const (

common/image.go

@@ -83,7 +83,7 @@ func tmpName(tmpl string) (string, error) {
 			rrand = reseed()
 		}
 	}
-	return "", errors.New("Cannot create temp name")
+	return "", errors.New("cannot create temp name")
 }
 
 func SaveAsPNGAtomic(path string, img image.Image) (err error) {

common/redisclient.go

@@ -107,7 +107,7 @@ func isError(line []byte) error {
 // parseSize is a cheaper replacement for fmt.Sscanf(string(line), "$%d\r\n", &size).
 func parseSize(line []byte) (int, error) {
 	if len(line) < 1 || line[0] != '$' {
-		return 0, errors.New("Missing '$' at begin of line")
+		return 0, errors.New("missing '$' at begin of line")
 	}
 	line = bytes.TrimFunc(line[1:], unicode.IsSpace)
 	v, err := strconv.ParseInt(string(line), 10, 0)