fix corner case in inline (#5693)

fixes #5692

Author: alexlamsl

Diff for: lib/compress.js

@@ -13888,7 +13888,10 @@ Compressor.prototype.compress = function(node) {
                     var abort = false;
                     stat.walk(new TreeWalker(function(node) {
                         if (abort) return true;
-                        if (async && node instanceof AST_Await || node instanceof AST_Return) return abort = true;
+                        if (async && (node instanceof AST_Await || node instanceof AST_ForAwaitOf)
+                            || node instanceof AST_Return) {
+                            return abort = true;
+                        }
                         if (node instanceof AST_Scope) return true;
                     }));
                     return !abort;

Diff for: test/compress/awaits.js

@@ -3540,3 +3540,61 @@ issue_5634_3_side_effects: {
     ]
     node_version: ">=8"
 }
+
+issue_5692_1: {
+    options = {
+        awaits: true,
+        inline: true,
+    }
+    input: {
+        (async function() {
+            (async function() {
+                for await (var k of []);
+            })();
+            console.log("foo");
+        })();
+        console.log("bar");
+    }
+    expect: {
+        (async function() {
+            (async function() {
+                for await (var k of []);
+            })();
+            console.log("foo");
+        })();
+        console.log("bar");
+    }
+    expect_stdout: [
+        "foo",
+        "bar",
+    ]
+    node_version: ">=10"
+}
+
+issue_5692_2: {
+    options = {
+        awaits: true,
+        inline: true,
+    }
+    input: {
+        (async function() {
+            (async function() {
+                for (var k of []);
+            })();
+            console.log("foo");
+        })();
+        console.log("bar");
+    }
+    expect: {
+        (async function() {
+            for (var k of []);
+            console.log("foo");
+        })();
+        console.log("bar");
+    }
+    expect_stdout: [
+        "foo",
+        "bar",
+    ]
+    node_version: ">=8"
+}

Diff for: test/compress/functions.js

@@ -8719,3 +8719,24 @@ single_use_inline_collision: {
     }
     expect_stdout: "PASS"
 }
+
+issue_5692: {
+    options = {
+        inline: true,
+    }
+    input: {
+        (function() {
+            while (console.log("PASS"))
+                if (console)
+                    return;
+        })();
+    }
+    expect: {
+        (function() {
+            while (console.log("PASS"))
+                if (console)
+                    return;
+        })();
+    }
+    expect_stdout: "PASS"
+}