[PATCH] istream_helpers: Fix sscanf typo

[Rosen Penev]

This caused readin not to work properly with long long types.

Found accidentally through a glibc warning
(declared with warn_unused_result).

Tested with gptfdisk on OpenWrt.

Signed-off-by: Rosen Penev <rosenp at gmail.com>
---
 include/istream_helpers | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/istream_helpers b/include/istream_helpers
index f2c793f..f8db903 100644
--- a/include/istream_helpers
+++ b/include/istream_helpers
@@ -317,7 +317,7 @@ namespace std{
 					sscanf(temp.c_str(), "%llo", (unsigned long long *)&var );
 				}else if(stream.flags() & ios_base::hex){
 					if(stream.flags() & ios_base::uppercase){
-						scanf(temp.c_str(), "%llX", (unsigned long long *)&var );
+						sscanf(temp.c_str(), "%llX", (unsigned long long *)&var );
 					}else{
 						sscanf(temp.c_str(), "%llx", (unsigned long long *)&var);
 					}
@@ -344,7 +344,7 @@ namespace std{
 					sscanf(temp.c_str(), "%llo", &var );
 				}else if(stream.flags() & ios_base::hex){
 					if(stream.flags() & ios_base::uppercase){
-						scanf(temp.c_str(), "%llX", &var );
+						sscanf(temp.c_str(), "%llX", &var );
 					}else{
 						sscanf(temp.c_str(), "%llx", &var);
 					}
-- 
2.17.1