commit e4db7aedab65abadcc84c78e7a10ec7bb62f11cf
author Bram Moolenaar <Bram@vim.org> Tue Feb 13 13:12:11 2018 +0100
committer Bram Moolenaar <Bram@vim.org> Tue Feb 13 13:12:11 2018 +0100
tree cea60f8c2cef778a8c9f543e07a40f11ba7bbab4
parent 3198870137df64214317151726648af8e56f1729

patch 8.0.1512: warning for possibly using NULL pointer

Problem:    Warning for possibly using NULL pointer. (Coverity)
Solution:   Skip using the pointer if it's NULL.

src/ex_cmds.c

diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 788e9eb..a4d6221 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -6918,7 +6918,7 @@
 		copy_option_part(&p, NameBuff, MAXPATHL, ",");
 		mustfree = FALSE;
 		rt = vim_getenv((char_u *)"VIMRUNTIME", &mustfree);
-		if (fullpathcmp(rt, NameBuff, FALSE) != FPC_SAME)
+		if (rt != NULL && fullpathcmp(rt, NameBuff, FALSE) != FPC_SAME)
 		{
 		    int		fcount;
 		    char_u	**fnames;