Small fixes

Author: gansm

examples/rotozoomer.cpp

@@ -53,7 +53,11 @@ namespace {
 constexpr int MAX_LOOPS{314};
 
 // Non-member functions
+#if __cplusplus >= 201703L
 constexpr auto generateSinTable() noexcept -> std::array<float, MAX_LOOPS>
+#else
+auto generateSinTable() noexcept -> std::array<float, MAX_LOOPS>
+#endif
 {
   std::array<float, MAX_LOOPS> table{};
 
@@ -64,7 +68,11 @@ constexpr auto generateSinTable() noexcept -> std::array<float, MAX_LOOPS>
 }
 
 //----------------------------------------------------------------------
+#if __cplusplus >= 201703L
 constexpr auto generateDataPattern() noexcept -> std::array<wchar_t, 256>
+#else
+auto generateDataPattern() noexcept -> std::array<wchar_t, 256>
+#endif
 {
   std::array<wchar_t, 256> arr{};
   const std::array<wchar_t, 4> init_val{{L' ', L'+', L'x', L' '}};

final/vterm/fvterm.cpp

@@ -2250,16 +2250,14 @@ inline auto FVTerm::printCharacterOnCoordinate ( FTermArea* area
   if ( *ac == ch )  // compare with an overloaded operator
     return ac->attr.bit.char_width;
 
-  auto& line_changes = area->changes_in_line[ay];
-
   const bool trans_old =
       (ac->attr.byte[1] & internal::var::b1_print_transparent_mask) != 0;
   const bool trans_new =
       (ch.attr.byte[1] & internal::var::b1_print_transparent_mask) != 0;
   const auto trans_changed = int(trans_new) - int(trans_old);
 
   if ( trans_changed != 0 )
-    line_changes.trans_count += trans_changed;
+    area->changes_in_line[ay].trans_count += trans_changed;
 
   // copy character to area
   *ac = ch;