From 20873aca12bea2843f093dd7d205cd20dd88cb91 Mon Sep 17 00:00:00 2001
From: Julian Rex <julian.rex@mapbox.com>
Date: Tue, 17 Sep 2019 14:16:16 -0400
Subject: [ios, macos] (potentially) free the returned arch info.

---
 platform/darwin/src/MGLSDKMetricsManager.m | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/platform/darwin/src/MGLSDKMetricsManager.m b/platform/darwin/src/MGLSDKMetricsManager.m
index 7f89c36b3b..828fbcd505 100644
--- a/platform/darwin/src/MGLSDKMetricsManager.m
+++ b/platform/darwin/src/MGLSDKMetricsManager.m
@@ -47,8 +47,16 @@ NSString* MGLStringFromMetricType(MGLMetricType metricType) {
         
         NSString *device = deviceName();
         
-        const NXArchInfo *localArchInfo = NXGetLocalArchInfo();
-        NSString *abi = (localArchInfo != NULL) ? @(localArchInfo->description) : @"unknown";
+        NSString *abi = @"unknown";
+        
+        {
+            const NXArchInfo *localArchInfo = NXGetLocalArchInfo();
+        
+            if (localArchInfo) {
+                abi = @(localArchInfo->description);
+                NXFreeArchInfo(localArchInfo);
+            }
+        }
         
         NSString *ram = [NSString stringWithFormat:@"%llu", [NSProcessInfo processInfo].physicalMemory];
         
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