adding a couple crashfixes

Author: tibbi

app/src/main/kotlin/com/simplemobiletools/contacts/activities/ContactActivity.kt

@@ -95,13 +95,17 @@ abstract class ContactActivity : SimpleActivity() {
 
     fun deleteContact() {
         ConfirmationDialog(this) {
-            ContactsHelper(this).deleteContact(contact!!)
-            finish()
+            if (contact != null) {
+                ContactsHelper(this).deleteContact(contact!!)
+                finish()
+            }
         }
     }
 
     fun shareContact() {
-        shareContacts(arrayListOf(contact!!))
+        if (contact != null) {
+            shareContacts(arrayListOf(contact!!))
+        }
     }
 
     fun trySendSMS() {

app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt

@@ -190,7 +190,7 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
 
                 override fun onQueryTextChange(newText: String): Boolean {
                     if (isSearchOpen) {
-                        getCurrentFragment().onSearchQueryChanged(newText)
+                        getCurrentFragment()?.onSearchQueryChanged(newText)
                     }
                     return true
                 }