Added some comments

2 files changed, 2 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
index 2e0c06e8..d1e929fa 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -49,4 +49,5 @@ a license to everyone to use it as detailed in LICENSE.)
 * Manuel Schölling <manuel.schoelling@gmx.de>
 * Bruce Mitchener, Jr. <bruce.mitchener@gmail.com>
 * Michael Bishop <mbtyke@gmail.com>
+* Lorant Pinter <lorant.pinter@prezi.com>
 
diff --git a/src/preamble.js b/src/preamble.js
index 98395200..24049283 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -470,6 +470,7 @@ function allocate(slab, types, allocator, ptr) {
 
     setValue(ret+i, curr, type);
 
+    // no need to look up size unless type changes, so cache it
     if (previousType !== type) {
       typeSize = Runtime.getNativeTypeSize(type);
       previousType = type;