Added check for a nativeMaxScroll of 0 in getNativeMaxScroll

Author: Zane McCaig

Diff for: js/angular/controller/infiniteScrollController.js

@@ -100,13 +100,15 @@ function($scope, $attrs, $element, $timeout) {
     };
     var computedStyle = window.getComputedStyle(self.scrollEl) || {};
     return {
-      left: computedStyle.overflowX === 'scroll' ||
-      computedStyle.overflowX === 'auto' ||
-      self.scrollEl.style['overflow-x'] === 'scroll' ?
+      left: maxValues.left &&
+        (computedStyle.overflowX === 'scroll' ||
+        computedStyle.overflowX === 'auto' ||
+        self.scrollEl.style['overflow-x'] === 'scroll') ?
         calculateMaxValue(maxValues.left) : -1,
-      top: computedStyle.overflowY === 'scroll' ||
-      computedStyle.overflowY === 'auto' ||
-      self.scrollEl.style['overflow-y'] === 'scroll' ?
+      top: maxValues.top &&
+        (computedStyle.overflowY === 'scroll' ||
+        computedStyle.overflowY === 'auto' ||
+        self.scrollEl.style['overflow-y'] === 'scroll' ) ?
         calculateMaxValue(maxValues.top) : -1
     };
   };