fix(🐛): avoid dangling pointer when reading runtime shader child name (#3614)

Co-authored-by: Subrata <[email protected]>
Co-authored-by: William Candillon <[email protected]>

Author: 3 people

packages/skia/cpp/api/JsiSkImageFilterFactory.h

@@ -245,9 +245,11 @@ class JsiSkImageFilterFactory : public JsiSkHostObject {
   JSI_HOST_FUNCTION(MakeRuntimeShader) {
     auto rtb = JsiSkRuntimeShaderBuilder::fromValue(runtime, arguments[0]);
 
-    const char *childName = "";
+    std::string childNameStr = "";
+    const char *childName = childNameStr.c_str();
     if (hasOptionalArgument(arguments, count, 1)) {
-      childName = arguments[1].asString(runtime).utf8(runtime).c_str();
+      childNameStr = arguments[1].asString(runtime).utf8(runtime);
+      childName = childNameStr.c_str();
     }
 
     sk_sp<SkImageFilter> input = nullptr;