Enable readability checks

clang-tidy readability checks are overall a good thing, and help us to
write consistent and readable code, even if it doesn't change the
result.

All changes done by the robot.

Tested: Code compiles, inspection only (changes made by robot)

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Iee4a0c74a11eef9f158f0044eae675ebc518b549
diff --git a/include/ssl_key_handler.hpp b/include/ssl_key_handler.hpp
index 1213758..431dd84 100644
--- a/include/ssl_key_handler.hpp
+++ b/include/ssl_key_handler.hpp
@@ -25,15 +25,11 @@
 // Trust chain related errors.`
 inline bool isTrustChainError(int errnum)
 {
-    if ((errnum == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ||
-        (errnum == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) ||
-        (errnum == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) ||
-        (errnum == X509_V_ERR_CERT_UNTRUSTED) ||
-        (errnum == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE))
-    {
-        return true;
-    }
-    return false;
+    return (errnum == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ||
+           (errnum == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) ||
+           (errnum == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) ||
+           (errnum == X509_V_ERR_CERT_UNTRUSTED) ||
+           (errnum == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE);
 }
 
 inline bool validateCertificate(X509* const cert)