fix: Move header reference out of extern C (#3538)

Removing header references from extern C because they are causing compile errors with Android Studio and flutter.

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Fixes 
+
+- Move header reference out of "extern C" (#3538)
+
 ## 8.19.0
 
 ### Features
@@ -30,7 +36,6 @@
 - Fix a race condition in SentryTracer (#3523)
 - App start ends when first frame is drawn when performanceV2 is enabled (#3530)
 - Use correct rendered frames timestamp for TTID/TTFD and app start (#3531)
-
 - Missing transactions when not calling `reportFullyDisplayed` (#3477)
 
 ## 8.17.2

Sources/SentryCrash/Recording/Tools/SentryCrashMachineContext.h

@@ -28,14 +28,14 @@
 #ifndef HDR_SentryCrashMachineContext_h
 #define HDR_SentryCrashMachineContext_h
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include "SentryCrashThread.h"
 #include <mach/mach.h>
 #include <stdbool.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /** Suspend the runtime environment.
  */
 void sentrycrashmc_suspendEnvironment(

Sources/SentryCrash/Recording/Tools/SentryCrashStackCursor.h

@@ -26,15 +26,14 @@
 #ifndef SentryCrashStackCursor_h
 #define SentryCrashStackCursor_h
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include "SentryCrashMachineContext.h"
-
 #include <stdbool.h>
 #include <sys/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SentryCrashSC_CONTEXT_SIZE 100
 
 /** Point at which to give up walking a stack and consider it a stack overflow.

Sources/SentryCrash/Recording/Tools/SentryCrashThread.h

@@ -28,13 +28,13 @@
 #ifndef HDR_SentryCrashThread_h
 #define HDR_SentryCrashThread_h
 
+#include <stdbool.h>
+#include <sys/types.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include <stdbool.h>
-#include <sys/types.h>
-
 typedef uintptr_t SentryCrashThread;
 
 /** Get a thread's name. Internally, a thread name will