Fix issue with time failing to expand with macroexpand-all (#1144)

Hi,

could you please consider patch to use an auto-gensym for the let
binding in the `time` macro. It addresses #1143.

I assumed here that a straight let binding was used inadvertently rather
than an auto-gensym.

No tests were included due to the simplicity of the fix.

Thanks

Co-authored-by: ikappaki <[email protected]>

Author: ikappaki

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  * Fix a bug where `keyword` and `symbol` functions did not treat string arguments as potentially namespaced (#1131)
  * Fix a bug where `condp` would throw an exception if a result expression was `nil` (#1137)
  * Fix a bug where integer division which resulted in an integer would return a `fractions.Fraction` (#1140)
+ * Fix a bug where `basilisp.core/time` would fail to expand with `macroexpand-all` in a nested macro call (#1143)
 
 ## [v0.3.2]
 ### Added

src/basilisp/core.lpy

@@ -4078,11 +4078,11 @@
   "Time the execution of ``expr``\\. Return the result of ``expr`` and print the time
   execution took in milliseconds."
   [expr]
-  `(let [start (perf-counter)]
+  `(let [start# (perf-counter)]
      (try
        (do ~expr)
        (finally
-         (println (* 1000 (- (perf-counter) start)) "msecs")))))
+         (println (* 1000 (- (perf-counter) start#)) "msecs")))))
 
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