fix: Fix issues clang-tidy found (#1708)

Fixes #1706.

src/util/CoroutineGroup.cpp

@@ -41,10 +41,16 @@ CoroutineGroup::~CoroutineGroup()
     ASSERT(childrenCounter_ == 0, "CoroutineGroup is destroyed without waiting for child coroutines to finish");
 }
 
+bool
+CoroutineGroup::canSpawn() const
+{
+    return not maxChildren_.has_value() or childrenCounter_ < *maxChildren_;
+}
+
 bool
 CoroutineGroup::spawn(boost::asio::yield_context yield, std::function<void(boost::asio::yield_context)> fn)
 {
-    if (maxChildren_.has_value() && childrenCounter_ >= *maxChildren_)
+    if (not canSpawn())
         return false;
 
     ++childrenCounter_;

src/util/CoroutineGroup.hpp

@@ -54,6 +54,14 @@ public:
      */
     ~CoroutineGroup();
 
+    /**
+     * @brief Check if a new coroutine can be spawned (i.e. there is space for a new coroutine in the group)
+     *
+     * @return true If a new coroutine can be spawned. false if the maximum number of coroutines has been reached
+     */
+    bool
+    canSpawn() const;
+
     /**
      * @brief Spawn a new coroutine in the group
      *