fix typos

doc/zmq_gssapi.txt

@@ -29,9 +29,9 @@ for whom GSSAPI credentials should be acquired.
 To become a GSSAPI server, the application additionally sets the
 ZMQ_GSSAPI_SERVER option on the socket.
 
-To become a GSSAPI client, the application sets additionally sets the
+To become a GSSAPI client, the application additionally sets the
 ZMQ_GSSAPI_SERVICE_PRINCIPAL option to the name of the principal of the server
-to which it intends to connect.  
+to which it intends to connect.
 
 
 OPTIONAL ENCRYPTION

doc/zmq_setsockopt.txt

@@ -203,7 +203,7 @@ Applicable socket types:: all, when using TCP transport
 
 ZMQ_GSSAPI_PLAINTEXT: Disable GSSAPI encryption
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Defines whether communications on the socket will encrypted, see
+Defines whether communications on the socket will be encrypted, see
 linkzmq:zmq_gssapi[7]. A value of '1' means  that communications will be
 plaintext.  A value of '0' means communications will be encrypted.
 

src/socket_base.cpp

@@ -1205,7 +1205,7 @@ int zmq::socket_base_t::recv (msg_t *msg_, int flags_)
 
     //  If the message cannot be fetched immediately, there are two scenarios.
     //  For non-blocking recv, commands are processed in case there's an
-    //  activate_reader command already waiting int a command pipe.
+    //  activate_reader command already waiting in a command pipe.
     //  If it's not, return EAGAIN.
     if (flags_ & ZMQ_DONTWAIT || options.rcvtimeo == 0) {
         if (unlikely (process_commands (0, false) != 0)) {