Make a new pointer to pass to git_revparse.

revparse.go

@@ -46,7 +46,7 @@ func (r *Repository) RevParse(spec string) (*RevSpec, error) {
 	cspec := C.CString(spec)
 	defer C.free(unsafe.Pointer(cspec))
 
-	var ptr *C.git_revspec
+	ptr := new(C.git_revspec)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()

revparse_test.go

@@ -1,7 +1,6 @@
 package git
 
 import (
-	"fmt"
 	"os"
 	"testing"
 )
@@ -11,7 +10,6 @@ func TestRevParseSingle(t *testing.T) {
 	defer os.RemoveAll(repo.Workdir())
 
 	commitId, _ := seedTestRepo(t, repo)
-	fmt.Println(commitId)
 
 	revSpec, err := repo.RevParse("HEAD")
 	checkFatal(t, err)