Recast for getpid() because it requires an int.

diff --git a/xpcom/base/nsStatusReporterManager.cpp b/xpcom/base/nsStatusReporterManager.cpp

--- a/xpcom/base/nsStatusReporterManager.cpp

+++ b/xpcom/base/nsStatusReporterManager.cpp

@@ -148,7 +148,7 @@

nsresult rv;

nsCString filename("status-reports-");

- filename.AppendInt(getpid());

+ filename.AppendInt((int)getpid());

filename.Append('-');

filename.AppendInt(number++);

filename.AppendLiteral(".json");