updated for version 7.4.301

Problem:    Still a scrolling problem when loading a session file.
Solution:   Fix off-by-one mistake. (Nobuhiro Takasaki)

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    301,
 /**/
     300,
 /**/

src/window.c

@@ -5748,7 +5748,7 @@ win_new_height(wp, height)
 		lnum++;
 		wp->w_wrow -= line_size + sline;
 	    }
-	    else if (sline > 0)
+	    else if (sline >= 0)
 	    {
 		/* First line of file reached, use that as topline. */
 		lnum = 1;