Remove duplicated contains_key test

youknowone · youknowone · commit b73f3d6b1f9b · 2019-08-31T00:25:16.000+09:00
diff --git a/compiler/src/symboltable.rs b/compiler/src/symboltable.rs
@@ -710,7 +710,8 @@ impl SymbolTableBuilder {
         let location = Default::default();
 
         // Some checks:
-        if table.symbols.contains_key(name) {
+        let containing = table.symbols.contains_key(name);
+        if containing {
             // Role already set..
             match role {
                 SymbolUsage::Global => {
@@ -747,7 +748,7 @@ impl SymbolTableBuilder {
         }
 
         // Insert symbol when required:
-        if !table.symbols.contains_key(name) {
+        if !containing {
             let symbol = Symbol::new(name);
             table.symbols.insert(name.to_string(), symbol);
         }
