HackStudio: Fix debugger preview for char variables

Author: https://github.com/FalseHonesty
Commit: cffc0a4f45
Pull-request: https://github.com/SerenityOS/serenity/pull/6258
Reviewed-by: https://github.com/itamar8910 ✅

Userland/DevTools/HackStudio/Debugger/VariablesModel.cpp

@@ -97,7 +97,7 @@ static String variable_value_as_string(const Debug::DebugInfo::VariableInfo& var
     if (variable.type_name == "char") {
         auto value = Debugger::the().session()->peek((u32*)variable_address);
         VERIFY(value.has_value());
-        return String::formatted("'{0:c}' ({0:d})", value.value());
+        return String::formatted("'{0:c}'", (char)value.value());
     }
 
     if (variable.type_name == "bool") {