Rename GlobalInit::GlobalRef to GlobalInit::GetGlobal.

"Ref" is an increasingly overloaded term.

lib/wasm/src/sections_translator.rs

@@ -187,7 +187,7 @@ pub fn parse_global_section(
             Operator::F32Const { value } => GlobalInit::F32Const(value.bits()),
             Operator::F64Const { value } => GlobalInit::F64Const(value.bits()),
             Operator::GetGlobal { global_index } => {
-                GlobalInit::GlobalRef(GlobalIndex::new(global_index as usize))
+                GlobalInit::GetGlobal(GlobalIndex::new(global_index as usize))
             }
             ref s => panic!("unsupported init expr in global section: {:?}", s),
         };

lib/wasm/src/translation_utils.rs

@@ -71,7 +71,7 @@ pub enum GlobalInit {
     /// An `f64.const`.
     F64Const(u64),
     /// A `get_global` of another global.
-    GlobalRef(GlobalIndex),
+    GetGlobal(GlobalIndex),
     ///< The global is imported from, and thus initialized by, a different module.
     Import,
 }