The v9fs_string_null() function just calls v9fs_string_free(). Also it
only has 4 users, whereas v9fs_string_free() has 87.

This patch converts users to call directly v9fs_string_free() and drops
the useless function.

Signed-off-by: Greg Kurz <gr...@kaod.org>
Reviewed-by: C├ędric Le Goater <c...@kaod.org>
---
 fsdev/9p-marshal.c | 5 -----
 fsdev/9p-marshal.h | 1 -
 hw/9pfs/9p.c       | 8 ++++----
 3 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/fsdev/9p-marshal.c b/fsdev/9p-marshal.c
index 238dbf21b1d5..a01bba6908a8 100644
--- a/fsdev/9p-marshal.c
+++ b/fsdev/9p-marshal.c
@@ -25,11 +25,6 @@ void v9fs_string_free(V9fsString *str)
     str->size = 0;
 }
 
-void v9fs_string_null(V9fsString *str)
-{
-    v9fs_string_free(str);
-}
-
 void GCC_FMT_ATTR(2, 3)
 v9fs_string_sprintf(V9fsString *str, const char *fmt, ...)
 {
diff --git a/fsdev/9p-marshal.h b/fsdev/9p-marshal.h
index 140db6d99f9c..77f7fef326ee 100644
--- a/fsdev/9p-marshal.h
+++ b/fsdev/9p-marshal.h
@@ -77,7 +77,6 @@ static inline void v9fs_string_init(V9fsString *str)
     str->size = 0;
 }
 extern void v9fs_string_free(V9fsString *str);
-extern void v9fs_string_null(V9fsString *str);
 extern void v9fs_string_sprintf(V9fsString *str, const char *fmt, ...);
 extern void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs);
 
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index dfe293d11d1c..d8f48ca76c47 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -810,15 +810,15 @@ static int stat_to_v9stat(V9fsPDU *pdu, V9fsPath *name,
     v9stat->mtime = stbuf->st_mtime;
     v9stat->length = stbuf->st_size;
 
-    v9fs_string_null(&v9stat->uid);
-    v9fs_string_null(&v9stat->gid);
-    v9fs_string_null(&v9stat->muid);
+    v9fs_string_free(&v9stat->uid);
+    v9fs_string_free(&v9stat->gid);
+    v9fs_string_free(&v9stat->muid);
 
     v9stat->n_uid = stbuf->st_uid;
     v9stat->n_gid = stbuf->st_gid;
     v9stat->n_muid = 0;
 
-    v9fs_string_null(&v9stat->extension);
+    v9fs_string_free(&v9stat->extension);
 
     if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
         err = v9fs_co_readlink(pdu, name, &v9stat->extension);
-- 
2.5.5


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