Fix code scanning alert no. 6: Time-of-check time-of-use filesystem r…

…ace condition

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Sources/SentryCrash/Recording/Tools/SentryCrashFileUtils.c

@@ -237,17 +237,18 @@ sentrycrashfu_readEntireFile(const char *const path, char **data, int *length, i
     int bytesToRead = maxLength;
 
     struct stat st;
-    if (stat(path, &st) < 0) {
-        SENTRY_ASYNC_SAFE_LOG_ERROR("Could not stat %s: %s", path, strerror(errno));
-        goto done;
-    }
 
     fd = open(path, O_RDONLY);
     if (fd < 0) {
         SENTRY_ASYNC_SAFE_LOG_ERROR("Could not open %s: %s", path, strerror(errno));
         goto done;
     }
 
+    if (fstat(fd, &st) < 0) {
+        SENTRY_ASYNC_SAFE_LOG_ERROR("Could not fstat %s: %s", path, strerror(errno));
+        goto done;
+    }
+
     if (bytesToRead == 0 || bytesToRead >= (int)st.st_size) {
         bytesToRead = (int)st.st_size;
     } else if (bytesToRead > 0) {