ensure that template files are closed

Signed-off-by: Joshua Rubin <jrubin@zvelo.com>

cmd/envetcd/main.go

@@ -10,7 +10,7 @@ import (
 
 const (
 	name    = "envetcd"
-	version = "0.3.3"
+	version = "0.3.4"
 )
 
 type configT struct {

envetcd.go

@@ -186,18 +186,19 @@ func processTemplates(keyPairs KeyPairs, templateFiles []string) {
 			continue
 		}
 
-		outFileName := tmpl[0 : len(tmpl)-len(ext)]
-		outFile, err := os.Create(outFileName)
+		tpl, err := template.ParseFiles(tmpl)
 		if err != nil {
-			log.Printf("[WARN] error creating file (%s): %s", outFileName, err)
+			log.Printf("[WARN] error parsing template (%s): %s", tmpl, err)
 			continue
 		}
 
-		tpl, err := template.ParseFiles(tmpl)
+		outFileName := tmpl[0 : len(tmpl)-len(ext)]
+		outFile, err := os.Create(outFileName)
 		if err != nil {
-			log.Printf("[WARN] error parsing template (%s): %s", tmpl, err)
+			log.Printf("[WARN] error creating file (%s): %s", outFileName, err)
 			continue
 		}
+		defer outFile.Close()
 
 		log.Printf("[INFO] updating template %s", tmpl)
 		if err := tpl.Execute(outFile, keyPairs); err != nil {