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vendor/github.com/go-sql-driver/mysql/buffer.go

@@ -130,18 +130,18 @@ func (b *buffer) takeBuffer(length int) []byte {
 // smaller than defaultBufSize
 // Only one buffer (total) can be used at a time.
 func (b *buffer) takeSmallBuffer(length int) []byte {
-	if b.length == 0 {
-		return b.buf[:length]
+	if b.length > 0 {
+		return nil
 	}
-	return nil
+	return b.buf[:length]
 }
 
 // takeCompleteBuffer returns the complete existing buffer.
 // This can be used if the necessary buffer size is unknown.
 // Only one buffer (total) can be used at a time.
 func (b *buffer) takeCompleteBuffer() []byte {
-	if b.length == 0 {
-		return b.buf
+	if b.length > 0 {
+		return nil
 	}
-	return nil
+	return b.buf
 }