Merge pull request #6359

f9441c5 Fixed string_ref usage bug in epee::from_hex::vector (vtnerd)

contrib/epee/src/hex.cpp

@@ -141,7 +141,7 @@ namespace epee
     result.reserve(count / 2);
 
     // the data to work with (std::string is always null-terminated)
-    auto data = src.data();
+    auto data = src.begin();
 
     // convert a single hex character to an unsigned integer
     auto char_to_int = [](const char *input) {
@@ -167,9 +167,9 @@ namespace epee
     };
 
     // keep going until we reach the end
-    while (data[0] != '\0') {
+    while (data != src.end()) {
       // skip unwanted characters
-      if (!include(data[0])) {
+      if (!include(*data)) {
         ++data;
         continue;
       }