vasprintf: return -1 on strdup failure

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libbb/platform.c b/libbb/platform.c
index d241d25a7..19734517b 100644
--- a/libbb/platform.c
+++ b/libbb/platform.c
@@ -33,7 +33,7 @@ int FAST_FUNC vasprintf(char **string_ptr, const char *format, va_list p)
         if (r < 128) {
                 va_end(p2);
                 *string_ptr = strdup(buf);
-                return r;
+                return (*string_ptr ? r : -1);
         }
 
         *string_ptr = malloc(r+1);