let Deque::getItem return for each control path

Signed-off-by: DNKpp <DNKpp2011@gmail.com>

include/reactphysics3d/containers/Deque.h

@@ -92,7 +92,7 @@ class Deque {
         T& getItem(size_t virtualIndex) const {
 
             // If the virtual index is valid
-            if (virtualIndex < mSize) {
+            assert (virtualIndex < mSize);
 
             size_t chunkIndex = mFirstChunkIndex;
             size_t itemIndex = mFirstItemIndex;
@@ -112,10 +112,6 @@ class Deque {
 
             return mChunks[chunkIndex][itemIndex];
         }
-            else {
-                assert(false);
-            }
-        }
 
         /// Add more chunks
         void expandChunks(size_t atLeastNbChunks = 0) {