Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for reference

Bug: 161896447
Change-Id: Iafcccbdbdf3ff1078e87000e2ce560ff09b43f68
diff --git a/adb_utils.h b/adb_utils.h
index 66cba12..e72d8b6 100644
--- a/adb_utils.h
+++ b/adb_utils.h
@@ -55,7 +55,7 @@
 
 bool set_file_block_mode(borrowed_fd fd, bool block);
 
-// Given forward/reverse targets, returns true if they look sane. If an error is found, fills
+// Given forward/reverse targets, returns true if they look valid. If an error is found, fills
 // |error| and returns false.
 // Currently this only checks "tcp:" targets. Additional checking could be added for other targets
 // if needed.
diff --git a/fdevent/fdevent_test.h b/fdevent/fdevent_test.h
index ecda4da..fcbf181 100644
--- a/fdevent/fdevent_test.h
+++ b/fdevent/fdevent_test.h
@@ -65,7 +65,7 @@
         ASSERT_EQ(0u, fdevent_installed_count());
     }
 
-    // Register a dummy socket used to wake up the fdevent loop to tell it to die.
+    // Register a placeholder socket used to wake up the fdevent loop to tell it to die.
     void PrepareThread() {
         int dummy_fds[2];
         if (adb_socketpair(dummy_fds) != 0) {
@@ -84,7 +84,7 @@
     }
 
     size_t GetAdditionalLocalSocketCount() {
-        // dummy socket installed in PrepareThread()
+        // placeholder socket installed in PrepareThread()
         return 1;
     }
 
diff --git a/sockets.cpp b/sockets.cpp
index 13a4737..33b9524 100644
--- a/sockets.cpp
+++ b/sockets.cpp
@@ -856,7 +856,7 @@
     s->peer->shutdown = nullptr;
     s->peer->close = local_socket_close_notify;
     s->peer->peer = nullptr;
-    /* give him our transport and upref it */
+    /* give them our transport and upref it */
     s->peer->transport = s->transport;
 
     connect_to_remote(s->peer, std::string_view(s->smart_socket_data).substr(4));