fix syntax error in tests (#4652)

test/compress/evaluate.js

@@ -399,7 +399,7 @@ unsafe_object_accessor: {
         function f() {
             var a = {
                 get b() {},
-                set b() {}
+                set b(v) {},
             };
             return { a: a };
         }
@@ -408,7 +408,7 @@ unsafe_object_accessor: {
         function f() {
             var a = {
                 get b() {},
-                set b() {}
+                set b(v) {},
             };
             return { a: a };
         }

test/compress/issue-12.js

@@ -2,16 +2,32 @@ keep_name_of_getter: {
     options = {
         unused: true,
     }
-    input: { a = { get foo () {} } }
+    input: {
-    expect: { a = { get foo () {} } }
+        a = {
+            get foo() {},
+        };
+    }
+    expect: {
+        a = {
+            get foo() {},
+        };
+    }
 }
 
 keep_name_of_setter: {
     options = {
         unused: true,
     }
-    input: { a = { set foo () {} } }
+    input: {
-    expect: { a = { set foo () {} } }
+        a = {
+            set foo(v) {},
+        };
+    }
+    expect: {
+        a = {
+            set foo(v) {},
+        };
+    }
 }
 
 setter_with_operator_keys: {
@@ -34,7 +50,7 @@ setter_with_operator_keys: {
             },
             get else() {
                 return test2;
-            }
+            },
         };
     }
     expect: {
@@ -56,7 +72,7 @@ setter_with_operator_keys: {
             },
             get else() {
                 return test2;
-            }
+            },
         };
     }
 }