[gnome-builder] source-vim: Dont go to negative lines when adjusting scroll

[Christian Hergert <chergert src gnome org>]

commit 2d19ace11b0a9f8e2f9a3324dac6c5ab4224110f
Author: Carlos Soriano <csoriano gnome org>
Date:   Tue Jan 13 10:49:20 2015 +0100

    source-vim: Dont go to negative lines when adjusting scroll
    
    Commit  fbb1252c tried to fix that, but the error was not there.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742767

 src/vim/gb-source-vim.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/vim/gb-source-vim.c b/src/vim/gb-source-vim.c
index 570dac9..9cda118 100644
--- a/src/vim/gb-source-vim.c
+++ b/src/vim/gb-source-vim.c
@@ -2746,7 +2746,7 @@ gb_source_vim_adjust_scroll (GbSourceVim          *vim,
 
     case GB_SOURCE_VIM_ALIGNMENT_BOTTOM:
       result->yalign = CLAMP (1.0, min_yalign, max_yalign);
-      result->line = line - (1.0 - result->yalign) * page_lines;
+      result->line = MAX(0, line - (1.0 - result->yalign) * page_lines);
       break;
 
     default:
@@ -2793,7 +2793,7 @@ gb_source_vim_move_page (GbSourceVim                 *vim,
       adjusted_scroll = gb_source_vim_adjust_scroll (vim, line, GB_SOURCE_VIM_ALIGNMENT_KEEP);
       break;
     case GB_SOURCE_VIM_PAGE_UP:
-      line = MAX (vim->priv->scroll_off, gtk_text_iter_get_line (&iter_top));
+      line = gtk_text_iter_get_line (&iter_top);
       adjusted_scroll = gb_source_vim_adjust_scroll (vim, line, GB_SOURCE_VIM_ALIGNMENT_BOTTOM);
       break;
     case GB_SOURCE_VIM_PAGE_DOWN: