Fix spelling of descendant

Summary: Closes facebook#6915

Differential Revision: D3162465

Pulled By: mkonicek

fb-gh-sync-id: e5237474f4ff901451c08bd904b78fabd15ab1dc
fbshipit-source-id: e5237474f4ff901451c08bd904b78fabd15ab1dc

Author: ianlin

React/Modules/RCTUIManager.m

@@ -1159,7 +1159,7 @@ static void RCTMeasureLayout(RCTShadowView *view,
   }
   CGRect result = [view measureLayoutRelativeToAncestor:ancestor];
   if (CGRectIsNull(result)) {
-    RCTLogError(@"view %@ (tag #%@) is not a decendant of %@ (tag #%@)",
+    RCTLogError(@"view %@ (tag #%@) is not a descendant of %@ (tag #%@)",
                 view, view.reactTag, ancestor, ancestor.reactTag);
     return;
   }
@@ -1231,7 +1231,7 @@ static void RCTMeasureLayout(RCTShadowView *view,
    ^(RCTShadowView *childShadowView, NSUInteger idx, __unused BOOL *stop) {
     CGRect childLayout = [childShadowView measureLayoutRelativeToAncestor:shadowView];
     if (CGRectIsNull(childLayout)) {
-      RCTLogError(@"View %@ (tag #%@) is not a decendant of %@ (tag #%@)",
+      RCTLogError(@"View %@ (tag #%@) is not a descendant of %@ (tag #%@)",
                   childShadowView, childShadowView.reactTag, shadowView, shadowView.reactTag);
       return;
     }