fix variable accounting in inline (#2085)

fixes #2084

test/compress/functions.js

@@ -297,3 +297,42 @@ webkit: {
     expect_exact: "console.log((function(){1+1}).a=1);"
     expect_stdout: "1"
 }
+
+issue_2084: {
+    options = {
+        collapse_vars: true,
+        conditionals: true,
+        evaluate: true,
+        inline: true,
+        passes: 2,
+        reduce_vars: true,
+        sequences: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        var c = 0;
+        !function() {
+            !function(c) {
+                c = 1 + c;
+                var c = 0;
+                function f14(a_1) {
+                    if (c = 1 + c, 0 !== 23..toString())
+                        c = 1 + c, a_1 && (a_1[0] = 0);
+                }
+                f14();
+            }(-1);
+        }();
+        console.log(c);
+    }
+    expect: {
+        var c = 0;
+        !function(c) {
+            c = 1 + c,
+            c = 1 + (c = 0),
+            0 !== 23..toString() && (c = 1 + c);
+        }(-1),
+        console.log(c);
+    }
+    expect_stdout: "0"
+}

test/compress/issue-281.js

@@ -151,7 +151,7 @@ negate_iife_4: {
         })();
     }
     expect: {
-        t ? console.log(true) : console.log(false), console.log("something"), void 0;
+        t ? console.log(true) : console.log(false), void console.log("something");
     }
 }
 
@@ -174,7 +174,7 @@ negate_iife_5: {
         })();
     }
     expect: {
-        t ? foo(true) : bar(false), console.log("something"), void 0;
+        t ? foo(true) : bar(false), void console.log("something");
     }
 }
 
@@ -197,7 +197,7 @@ negate_iife_5_off: {
         })();
     }
     expect: {
-        t ? foo(true) : bar(false), console.log("something"), void 0;
+        t ? foo(true) : bar(false), void console.log("something");
     }
 }
 
@@ -214,7 +214,7 @@ issue_1254_negate_iife_true: {
             };
         })()();
     }
-    expect_exact: 'console.log("test"),void 0;'
+    expect_exact: 'void console.log("test");'
     expect_stdout: true
 }
 
@@ -231,7 +231,7 @@ issue_1254_negate_iife_nested: {
             };
         })()()()()();
     }
-    expect_exact: '(console.log("test"),void 0)()()();'
+    expect_exact: '(void console.log("test"))()()();'
 }
 
 negate_iife_issue_1073: {
@@ -382,7 +382,7 @@ wrap_iife: {
             };
         })()();
     }
-    expect_exact: 'console.log("test"),void 0;'
+    expect_exact: 'void console.log("test");'
 }
 
 wrap_iife_in_expression: {
@@ -416,7 +416,7 @@ wrap_iife_in_return_call: {
             })();
         })()();
     }
-    expect_exact: '(console.log("test"),void 0)();'
+    expect_exact: '(void console.log("test"))();'
 }
 
 pure_annotation: {