Fix incorrect error on `read` with 1-character input

When `read` is given a single character of input (including the
newline), it was bailing as if it had been given no input. This is
incorrect.

1 files changed, 1 insertions, 1 deletions

diff --git a/builtin.cpp b/builtin.cpp
index 4604190c..e7c49285 100644
--- a/builtin.cpp
+++ b/builtin.cpp
@@ -2655,7 +2655,7 @@ static int builtin_read(parser_t &parser, wchar_t **argv)
             }
         }
 
-        if (buff.size() < 2 && eof)
+        if (buff.empty() && eof)
         {
             exit_res = 1;
         }