core: lexer: Fix up whitespace skipping

Signed-off-by: Chloe M. <chloe@mirocom.org>

core/lexer.c

@@ -73,13 +73,17 @@ lexer_consume_single(struct cescal_state *state, bool skip_ws)
     }
 
     if ((c = lexer_putback_pop(state)) != '\0') {
-        if (lexer_is_ws(c) && !skip_ws) {
+        if (!skip_ws) {
+            return c;
+        }
+
+        if (skip_ws && !lexer_is_ws(c)) {
             return c;
         }
     }
 
     while ((c = readbuf_read(&state->rb, state->in_fd)) != '\0') {
-        if (lexer_is_ws(c)) {
+        if (lexer_is_ws(c) && skip_ws) {
             continue;
         }