Fix - App is force closed in Variable screen, string is null.

app/src/main/java/com/vsoft/uoflservicenow/ui/CatalogueVariableScreen.java

@@ -202,7 +202,7 @@ public class CatalogueVariableScreen extends AppCompatActivity {
                 LinearLayout.LayoutParams.WRAP_CONTENT);
                 LinearLayout.LayoutParams.WRAP_CONTENT);
 
 
         /*Added item Description in form*/
         /*Added item Description in form*/
-        if(!mCatalogueItemShortDescription.isEmpty()) {
+        if(mCatalogueItemShortDescription != null && !mCatalogueItemShortDescription.isEmpty()) {
             TextView shortDescriptionView = new TextView(CatalogueVariableScreen.this);
             TextView shortDescriptionView = new TextView(CatalogueVariableScreen.this);
             shortDescriptionView.setPadding(0, 0, 0, (int)getResources().getDimension(R.dimen.normal_margin));
             shortDescriptionView.setPadding(0, 0, 0, (int)getResources().getDimension(R.dimen.normal_margin));
             shortDescriptionView.setTypeface(null, Typeface.BOLD);
             shortDescriptionView.setTypeface(null, Typeface.BOLD);
@@ -216,7 +216,7 @@ public class CatalogueVariableScreen extends AppCompatActivity {
             mContainerLayout.addView(shortDescriptionView, childControlViewLayoutParams);
             mContainerLayout.addView(shortDescriptionView, childControlViewLayoutParams);
         }
         }
 
 
-        if(!mCatalogueItemDescription.isEmpty()) {
+        if(mCatalogueItemDescription != null && !mCatalogueItemDescription.isEmpty()) {
             TextView descriptionView = new TextView(CatalogueVariableScreen.this);
             TextView descriptionView = new TextView(CatalogueVariableScreen.this);
             descriptionView.setMovementMethod(LinkMovementMethod.getInstance());
             descriptionView.setMovementMethod(LinkMovementMethod.getInstance());
             if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
             if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {