revert #652

reverting broad cosmetic/style change because:
- increases merge-conflicts
- increases overhead of merging upstream Vim patches
- reasons for change are ambiguous, so default to no change

1 files changed, 1 insertions, 1 deletions

diff --git a/src/os/fs.c b/src/os/fs.c
index 461913433f..f9b02375e1 100644
--- a/src/os/fs.c
+++ b/src/os/fs.c
@@ -84,7 +84,7 @@ static bool is_executable_in_path(const char_u *name)
 {
   const char *path = getenv("PATH");
   // PATH environment variable does not exist or is empty.
-  if (path == NULL || *path == '\0') {
+  if (path == NULL || *path == NUL) {
     return false;
   }