fix: check correct variables for profiles/traces rand (#5447)

Author: armcknight

CHANGELOG.md

@@ -10,6 +10,7 @@
 
 - Fix building with Xcode 26 (#5386)
 - Fix usage of `@available` to be `iOS` instead of `iOSApplicationExtension` (#5361)
+- Robustness against corrupt launch profile configuration files (#5447)
 
 ### Improvements
 

Sources/Sentry/Profiling/SentryLaunchProfiling.m

@@ -271,7 +271,7 @@
     profileOptions.sessionSampleRate = profilesRate.floatValue;
 
     NSNumber *profilesRand = launchConfig[kSentryLaunchProfileConfigKeyProfilesSampleRand];
-    if (profilesRate == nil) {
+    if (profilesRand == nil) {
         SENTRY_LOG_DEBUG(@"Received a nil configured launch profile sample rand, will not "
                          @"start trace profiler for launch.");
         return;
@@ -285,7 +285,7 @@
     }
 
     NSNumber *tracesRand = launchConfig[kSentryLaunchProfileConfigKeyTracesSampleRand];
-    if (tracesRate == nil) {
+    if (tracesRand == nil) {
         SENTRY_LOG_DEBUG(@"Received a nil configured launch trace sample rand, will not start "
                          @"trace profiler for launch.");
         return;