fixing assignment-in-condition

test/fixtures/execution/test_assignment.coffee

@@ -0,0 +1,23 @@
+# Assign to try/catch.
+
+result: try
+  nonexistent * missing
+catch error
+  true
+
+result2: try nonexistent * missing catch error then true
+
+print(result is true and result2 is true)
+
+
+# Assign to conditional.
+
+get_x: => 10
+
+if x: get_x() then 100
+
+print(x is 10)
+
+x: if get_x() then 100
+
+print(x is 100)