crash-reporter: fix linter issues

Fixed various issues reported by cpplint.py when run on
src/platform2/crash-reporter.

BUG=None
TEST=FEATURES=test emerge-link crash-reporter
cpplint.py `find crash-reporter/* | grep "\.cc\|\.h"`

Change-Id: If874b3dbf539d2dd22cf740a0d3523225d1c61a7
Reviewed-on: https://chromium-review.googlesource.com/210418
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
diff --git a/crash_reporter/crash_collector.cc b/crash_reporter/crash_collector.cc
index 152aec3..9b30074 100644
--- a/crash_reporter/crash_collector.cc
+++ b/crash_reporter/crash_collector.cc
@@ -6,12 +6,12 @@
 
 #include <dirent.h>
 #include <fcntl.h>  // For file creation modes.
+#define __STDC_FORMAT_MACROS  // PRId64
+#include <inttypes.h>
 #include <pwd.h>  // For struct passwd.
 #include <sys/types.h>  // for mode_t.
 #include <sys/wait.h>  // For waitpid.
 #include <unistd.h>  // For execv and fork.
-#define __STDC_FORMAT_MACROS  // PRId64
-#include <inttypes.h>
 
 #include <set>
 #include <utility>