Change use of deprecated '->' operator on an iterator

In display_buffer.hh, the '->' operator is used on an iterator, but
(surprisingly) this is deprecated from C++20 because of x-value vs
l-value ambiguity. Now clang's -Wdeprecated-declarations warns about it
as we declare -std=c++2a. See

  https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1252r2.pdf

which was adopted for 2019-03.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/display_buffer.hh b/src/display_buffer.hh
index 0fef5258..c13bd0b9 100644
--- a/src/display_buffer.hh
+++ b/src/display_buffer.hh
@@ -141,7 +141,7 @@ public:
         if (auto first = std::find_if(beg, end, has_buffer_range); first != end)
         {
             auto& last = *std::find_if(std::reverse_iterator(end), std::reverse_iterator(first), has_buffer_range);
-            m_range.begin = std::min(m_range.begin, first->begin());
+            m_range.begin = std::min(m_range.begin, (*first).begin());
             m_range.end = std::max(m_range.end, last.end());
         }
         return m_atoms.insert(pos, beg, end);