done WEB-16829 — don't load source map twice. If sourcemap was preloaded, so, we don't need to load it again.

platform/script-debugger/backend/src/org/jetbrains/debugger/Script.java

@@ -7,8 +7,6 @@ import org.jetbrains.annotations.Nullable;
 import org.jetbrains.debugger.sourcemap.SourceMap;
 
 public interface Script extends UserDataHolderEx, HasUrl {
-  void setSourceMap(SourceMap sourceMap);
-
   enum Type {
     /** A native, internal JavaScript VM script */
     NATIVE,
@@ -25,6 +23,8 @@ public interface Script extends UserDataHolderEx, HasUrl {
   @Nullable
   SourceMap getSourceMap();
 
+  void setSourceMap(@Nullable SourceMap sourceMap);
+
   @Override
   @NotNull
   Url getUrl();