chore: cleanup

Author: vmihailenco

.travis.yml

@@ -1,9 +1,11 @@
 # Source maps consumer for Golang
 
-[![Build Status](https://travis-ci.org/go-sourcemap/sourcemap.svg)](https://travis-ci.org/go-sourcemap/sourcemap)
 [![PkgGoDev](https://pkg.go.dev/badge/github.com/go-sourcemap/sourcemap)](https://pkg.go.dev/github.com/go-sourcemap/sourcemap)
 
-> :heart: [**Uptrace.dev** - distributed traces, logs, and errors in one place](https://uptrace.dev)
+> This package is brought to you by :star: [**uptrace/uptrace**](https://github.com/uptrace/uptrace).
+> Uptrace is an open-source APM tool that supports distributed tracing, metrics, and logs. You can
+> use it to monitor applications and set up automatic alerts to receive notifications via email,
+> Slack, Telegram, and others.
 
 ## Installation
 

README.md

@@ -184,6 +184,10 @@ func (c *Consumer) Source(
 func (c *Consumer) source(
 	m *sourceMap, genLine, genColumn int,
 ) (source, name string, line, column int, ok bool) {
+	if len(m.mappings) == 0 {
+		return
+	}
+
 	i := sort.Search(len(m.mappings), func(i int) bool {
 		m := &m.mappings[i]
 		if int(m.genLine) == genLine {
@@ -195,10 +199,6 @@ func (c *Consumer) source(
 	var match *mapping
 	// Mapping not found
 	if i == len(m.mappings) {
-		// Empty mappings
-		if len(m.mappings) == 0 {
-			return
-		}
 		// lets see if the line is correct but the column is bigger
 		match = &m.mappings[i-1]
 		if int(match.genLine) != genLine {