update error handling

src/term.c

@@ -25,8 +25,6 @@
 #endif
 
 #ifdef _WIN32
-// TODO: align the two calls to be similar, and use a single name for the function
-
 // after an error is returned, GetLastError() result can be passed to this function to get a string
 // representation of the error on the stack.
 // result will be nil+error on the stack, always 2 results.
@@ -754,12 +752,10 @@ Get the size of the terminal in columns and rows.
 static int lst_termsize(lua_State *L) {
     int columns, rows;
 
-// TODO: integrate error handling with helper functions at the top
 #ifdef _WIN32
     CONSOLE_SCREEN_BUFFER_INFO csbi;
     if (!GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi)) {
-        lua_pushnil(L);
-        lua_pushstring(L, "Failed to get terminal size.");
+        termFormatError(L, GetLastError(), "Failed to get terminal size.");
         return 2;
     }
     columns = csbi.srWindow.Right - csbi.srWindow.Left + 1;
@@ -768,9 +764,7 @@ static int lst_termsize(lua_State *L) {
 #else
     struct winsize ws;
     if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
-        lua_pushnil(L);
-        lua_pushstring(L, "Failed to get terminal size.");
-        return 2;
+        return pusherror(L, "Failed to get terminal size.");
     }
     columns = ws.ws_col;
     rows = ws.ws_row;