Fix assertions

Summary:
Changelog:
[Internal][Fixed] - Fix non-null assertions

These assertions weren't asserting that these objects aren't null.

Reviewed By: mdvacca

Differential Revision: D21844260

fbshipit-source-id: 6102fb304ddb6db61411e15c32355e4c3d3effca

ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.java

@@ -104,8 +104,8 @@ public static DisplayMetrics getScreenDisplayMetrics() {
   }
 
   public static Map<String, Map<String, Object>> getDisplayMetricsMap(double fontScale) {
-    Assertions.assertNotNull(
-        sWindowDisplayMetrics != null || sScreenDisplayMetrics != null,
+    Assertions.assertCondition(
+        sWindowDisplayMetrics != null && sScreenDisplayMetrics != null,
         "DisplayMetricsHolder must be initialized with initDisplayMetricsIfNotInitialized or initDisplayMetrics");
     final Map<String, Map<String, Object>> result = new HashMap<>();
     result.put("windowPhysicalPixels", getPhysicalPixelsMap(sWindowDisplayMetrics, fontScale));
@@ -114,8 +114,8 @@ public static Map<String, Map<String, Object>> getDisplayMetricsMap(double fontS
   }
 
   public static WritableNativeMap getDisplayMetricsNativeMap(double fontScale) {
-    Assertions.assertNotNull(
-        sWindowDisplayMetrics != null || sScreenDisplayMetrics != null,
+    Assertions.assertCondition(
+        sWindowDisplayMetrics != null && sScreenDisplayMetrics != null,
         "DisplayMetricsHolder must be initialized with initDisplayMetricsIfNotInitialized or initDisplayMetrics");
     final WritableNativeMap result = new WritableNativeMap();
     result.putMap(