rgw: off-by-one in rgw_trim_whitespace()

Fixes: #7543
Backport: dumpling

Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
Signed-off-by: Ray Lv <raylv@yahoo-inc.com>

diff --git a/src/rgw/rgw_common.cc b/src/rgw/rgw_common.cc
index 50b0eaf32bf379a341034509fd286819786444c1..e413a45095397ecbf4ae7b7fa036aad52c40c7c5 100644 (file)
--- a/src/rgw/rgw_common.cc
+++ b/src/rgw/rgw_common.cc
@@ -793,7 +793,7 @@ string rgw_trim_whitespace(const string& src)
   }
 
   int end = src.size() - 1;
-  if (end <= start) {
+  if (end < start) {
     return string();
   }