Fix the build for NLL

Test with `RUSTFLAGS="-Zborrowck=mir -Ztwo-phase-borrows" cargo build`

https://internals.rust-lang.org/t/help-us-get-non-lexical-lifetimes-nll-over-the-finish-line/7807/7

1 files changed, 3 insertions, 3 deletions

diff --git a/components/script/dom/webglrenderingcontext.rs b/components/script/dom/webglrenderingcontext.rs
index e265c83aa90..d520985aafe 100644
--- a/components/script/dom/webglrenderingcontext.rs
+++ b/components/script/dom/webglrenderingcontext.rs
@@ -1979,7 +1979,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
 
         typedarray!(in(cx) let array_buffer: ArrayBuffer = data);
         let data_vec = match array_buffer {
-            Ok(mut data) => data.to_vec(),
+            Ok(data) => data.to_vec(),
             Err(_) => fallible_array_buffer_view_to_vec(cx, data)?,
         };
 
@@ -2016,8 +2016,8 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
     fn BufferSubData(&self, target: u32, offset: i64, data: ArrayBufferViewOrArrayBuffer) {
         let data_vec = match data {
             // Typed array is rooted, so we can safely temporarily retrieve its slice
-            ArrayBufferViewOrArrayBuffer::ArrayBuffer(mut inner) => inner.to_vec(),
-            ArrayBufferViewOrArrayBuffer::ArrayBufferView(mut inner) => inner.to_vec(),
+            ArrayBufferViewOrArrayBuffer::ArrayBuffer(inner) => inner.to_vec(),
+            ArrayBufferViewOrArrayBuffer::ArrayBufferView(inner) => inner.to_vec(),
         };
 
         let bound_buffer = handle_potential_webgl_error!(self, self.bound_buffer(target), return);