eth/tracers: fix typo in 4byte_tracer_legacy.js (ethereum#25020)

indentifier -> identifier

Author: eltociear

eth/tracers/js/internal/tracers/4byte_tracer_legacy.js

@@ -46,7 +46,7 @@
 		return false;
 	},
 
-	// store save the given indentifier and datasize.
+	// store save the given identifier and datasize.
 	store: function(id, size){
 		var key = "" + toHex(id) + "-" + size;
 		this.ids[key] = this.ids[key] + 1 || 1;