Flip SSL_SESSION fields to bool.

Change-Id: I0a3648437f78f37a4b710aaea73084a19be607c5
Reviewed-on: https://boringssl-review.googlesource.com/29485
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

ssl/handshake_client.cc

diff --git a/ssl/handshake_client.cc b/ssl/handshake_client.cc
index 391aa29..bb67235 100644
--- a/ssl/handshake_client.cc
+++ b/ssl/handshake_client.cc
@@ -1581,7 +1581,7 @@
   }
 
   if (renewed_session) {
-    session->not_resumable = 0;
+    session->not_resumable = false;
     SSL_SESSION_free(ssl->session);
     ssl->session = renewed_session.release();
   }
@@ -1635,7 +1635,7 @@
     }
     // Renegotiations do not participate in session resumption.
     if (!ssl->s3->initial_handshake_complete) {
-      ssl->s3->established_session->not_resumable = 0;
+      ssl->s3->established_session->not_resumable = false;
     }
 
     hs->new_session.reset();