[1357] a few editorial fixes

src/bin/xfrin/tests/xfrin_test.py

@@ -2948,7 +2948,7 @@ class TestFormatting(unittest.TestCase):
         self.assertEqual("example.org/IN",
                          format_zone_str(isc.dns.Name("example.org"),
                          isc.dns.RRClass("IN")))
-    
+
     def test_format_addrinfo(self):
         # This test may need to be updated if the input type is changed,
         # right now it is a nested tuple:

src/lib/dns/python/tsig_python.cc

@@ -92,7 +92,7 @@ PyMethodDef TSIGContext_methods[] = {
       "Verify a DNS message." },
     { "last_had_signature",
       reinterpret_cast<PyCFunction>(TSIGContext_lastHadSignature), METH_NOARGS,
-      "Return if the last verified message contained a signature" },
+      "Return True if the last verified message contained a signature" },
     { NULL, NULL, 0, NULL }
 };
 

src/lib/dns/tsig.h

@@ -352,11 +352,11 @@ public:
     TSIGError verify(const TSIGRecord* const record, const void* const data,
                      const size_t data_len);
 
-    /// \brief If the last verified message was signed.
+    /// \brief Check whether the last verified message was signed.
     ///
-    /// The RFC2845 allows for some of the messages not to be signed. However,
-    /// the last message must be signed and the class has knowledge if a given
-    /// message is last, therefore it can't check that.
+    /// RFC2845 allows for some of the messages not to be signed. However,
+    /// the last message must be signed and the class has no knowledge if a
+    /// given message is the last one, therefore it can't check directly.
     ///
     /// It is up to the caller to check if the last verified message was signed
     /// after all are verified by calling this function.