cdma: fix segfault by handling MEID property

Also, MEID->Meid to follow standard D-Bus property semantics.

introspection/org.freedesktop.ModemManager.Modem.Cdma.xml

@@ -93,7 +93,7 @@
       </arg>
     </method>
 
-    <property name="MEID" type="s" access="read">
+    <property name="Meid" type="s" access="read">
       <tp:docstring>
         The modem's Mobile Equipment Identifier.
       </tp:docstring>

src/mm-generic-cdma.c

@@ -68,6 +68,8 @@ typedef struct {
 
     guint poll_id;
 
+    char *meid;
+
     MMModemCdmaRegistrationState cdma_1x_reg_state;
     MMModemCdmaRegistrationState evdo_reg_state;
 
@@ -2279,6 +2281,9 @@ get_property (GObject *object, guint prop_id,
     case MM_MODEM_PROP_TYPE:
         g_value_set_uint (value, MM_MODEM_TYPE_CDMA);
         break;
+    case MM_MODEM_CDMA_PROP_MEID:
+        g_value_set_string (value, priv->meid);
+        break;
     case PROP_EVDO_REV0:
         g_value_set_boolean (value, priv->evdo_rev0);
         break;
@@ -2331,6 +2336,10 @@ mm_generic_cdma_class_init (MMGenericCdmaClass *klass)
                                       MM_MODEM_PROP_TYPE,
                                       MM_MODEM_TYPE);
 
+    g_object_class_override_property (object_class,
+                                      MM_MODEM_CDMA_PROP_MEID,
+                                      MM_MODEM_CDMA_MEID);
+
     g_object_class_install_property (object_class, PROP_EVDO_REV0,
             g_param_spec_boolean (MM_GENERIC_CDMA_EVDO_REV0,
                                   "EVDO rev0",

src/mm-modem-cdma.c

@@ -357,6 +357,15 @@ mm_modem_cdma_init (gpointer g_iface)
     if (initialized)
         return;
 
+    /* Properties */
+    g_object_interface_install_property
+        (g_iface,
+         g_param_spec_string (MM_MODEM_CDMA_MEID,
+                              "MEID",
+                              "MEID",
+                              NULL,
+                              G_PARAM_READABLE));
+
     /* Signals */
     signals[SIGNAL_QUALITY] =
         g_signal_new ("signal-quality",

src/mm-modem-cdma.h

@@ -35,6 +35,14 @@ typedef enum {
 
 #define MM_MODEM_CDMA_REGISTRATION_STATE_CHANGED "registration-state-changed"
 
+#define MM_MODEM_CDMA_MEID "meid"
+
+typedef enum {
+    MM_MODEM_CDMA_PROP_FIRST = 0x1200,
+
+    MM_MODEM_CDMA_PROP_MEID = MM_MODEM_CDMA_PROP_FIRST,
+} MMModemCdmaProp;
+
 typedef struct _MMModemCdma MMModemCdma;
 
 typedef void (*MMModemCdmaServingSystemFn) (MMModemCdma *modem,