fix: failed signup attempt with anonymous ParseUser leaves it in inconsistent state (#1136)

Author: shlusiak

parse/src/main/java/com/parse/ParseUser.java

@@ -757,15 +757,15 @@ private Map<String, String> getAuthData(String authType) {
 
     /* package */ void putAuthData(String authType, Map<String, String> authData) {
         synchronized (mutex) {
-            Map<String, Map<String, String>> newAuthData = getAuthData();
+            Map<String, Map<String, String>> newAuthData = new HashMap<>(getAuthData());
             newAuthData.put(authType, authData);
             performPut(KEY_AUTH_DATA, newAuthData);
         }
     }
 
     private void removeAuthData(String authType) {
         synchronized (mutex) {
-            Map<String, Map<String, String>> newAuthData = getAuthData();
+            Map<String, Map<String, String>> newAuthData = new HashMap<>(getAuthData());
             newAuthData.remove(authType);
             performPut(KEY_AUTH_DATA, newAuthData);
         }

parse/src/test/java/com/parse/ParseUserTest.java

@@ -959,7 +959,7 @@ public void testSaveAsyncWithLazyAndCurrentUser() throws Exception {
         ParseTaskUtils.wait(partialMockUser.saveAsync("sessionToken", Task.<Void>forResult(null)));
 
         // Make sure we clean authData
-        assertFalse(partialMockUser.getAuthData().containsKey("facebook"));
+        assertFalse(partialMockUser.getState().authData().containsKey("facebook"));
         // Make sure we save new currentUser
         verify(currentUserController, times(1)).setAsync(partialMockUser);
     }