format llvm.rs

Author: NobodyXu

src/target/llvm.rs

@@ -95,7 +95,13 @@ impl TargetInfo<'_> {
             env => env,
         };
         let abi = match self.abi {
-            "sim" => if env != "simulator" { "simulator" } else { "" },
+            "sim" => {
+                if env != "simulator" {
+                    "simulator"
+                } else {
+                    ""
+                }
+            }
             "llvm" | "softfloat" | "uwp" | "vec-extabi" => "",
             "ilp32" => "_ilp32",
             "abi64" => "",