code review 5434093: os/exec: make LookPath always search the current direct...

src/pkg/os/exec/lp_windows.go

 // Copyright 2010 The Go Authors.  All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package exec
 
 import (
         "errors"
         "os"
         "strings"
@@ skipping 45 matching lines @@
                         e = "." + e
                 }
                 exts = append(exts, e)
         }
         if strings.IndexAny(file, `:\/`) != -1 {
                 if f, err = findExecutable(file, exts); err == nil {
                         return
                 }
                 return ``, &Error{file, err}
         }
-        if pathenv := os.Getenv(`PATH`); pathenv == `` {
-                if f, err = findExecutable(`.\`+file, exts); err == nil {
-                        return
-                }
-        } else {
+        if f, err = findExecutable(`.\`+file, exts); err == nil {
+                return
+        }
+        if pathenv := os.Getenv(`PATH`); pathenv != `` {
                 for _, dir := range strings.Split(pathenv, `;`) {
                         if f, err = findExecutable(dir+`\`+file, exts); err == nil {
                                 return
                         }
                 }
         }
         return ``, &Error{file, ErrNotFound}
 }