port-probe: rename _get_port() to _peek_port() as there is no ownership transfer

plugins/linktop/mm-plugin-linktop.c

@@ -63,7 +63,7 @@ grab_port (MMPlugin *self,
         return FALSE;
     }
 
-    port = mm_port_probe_get_port (probe); /* transfer none */
+    port = mm_port_probe_peek_port (probe);
 
     /* TODO: Why do we check for device file? */
     devfile = g_udev_device_get_device_file (port);

plugins/nokia/mm-plugin-nokia.c

@@ -75,7 +75,7 @@ grab_port (MMPlugin *self,
         return FALSE;
     }
 
-    port = mm_port_probe_get_port (probe); /* transfer none */
+    port = mm_port_probe_peek_port (probe);
 
     /* Look for port type hints */
     if (g_udev_device_get_property_as_boolean (port, "ID_MM_NOKIA_PORT_TYPE_MODEM"))

plugins/option/mm-plugin-hso.c

@@ -60,7 +60,7 @@ grab_port (MMPlugin *self,
     gchar *devfile;
     MMPortType port_type;
 
-    port = mm_port_probe_get_port (probe); /* transfer none */
+    port = mm_port_probe_peek_port (probe);
     subsys = mm_port_probe_get_port_subsys (probe);
     name = mm_port_probe_get_port_name (probe);
 

plugins/option/mm-plugin-option.c

@@ -66,7 +66,7 @@ grab_port (MMPlugin *self,
         return FALSE;
     }
 
-    port = mm_port_probe_get_port (probe); /* transfer none */
+    port = mm_port_probe_peek_port (probe);
 
     /* Genuine Option NV devices are always supposed to use USB interface 0 as
      * the modem/data port, per mail with Option engineers.  Only this port

plugins/simtech/mm-plugin-simtech.c

@@ -65,7 +65,7 @@ grab_port (MMPlugin *self,
         return FALSE;
     }
 
-    port = mm_port_probe_get_port (probe); /* transfer none */
+    port = mm_port_probe_peek_port (probe);
 
     /* Look for port type hints; just probing can't distinguish which port should
      * be the data/primary port on these devices.  We have to tag them based on