fix(cli): keep default cc flags in build

cli/src/generate/render.rs

@@ -256,7 +256,7 @@ impl Generator {
                 .count()
                 + 1;
             let constant_name = if let Some(symbol) = symbol {
-                format!("{}_character_set_{}", self.symbol_ids[&symbol], count)
+                format!("{}_character_set_{}", self.symbol_ids[symbol], count)
             } else {
                 format!("extras_character_set_{}", count)
             };

cli/src/main.rs

@@ -500,7 +500,7 @@ fn run() -> Result<()> {
                         }
                         (true, false) => &["TREE_SITTER_REUSE_ALLOCATOR"],
                         (false, true) => &["TREE_SITTER_INTERNAL_BUILD"],
-                        (false, false) => &[""],
+                        (false, false) => &[],
                     };
 
                 let config = Config::load(None)?;