cmUVHandlePtr: Add explicit conversion to bool

Source/cmUVHandlePtr.cxx

@@ -96,6 +96,12 @@ void uv_handle_ptr_base_<T>::allocate(void* data)
   this->handle->data = data;
 }
 
+template <typename T>
+uv_handle_ptr_base_<T>::operator bool() const
+{
+  return this->handle.get();
+}
+
 template <typename T>
 void uv_handle_ptr_base_<T>::reset()
 {

Source/cmUVHandlePtr.h

@@ -130,6 +130,8 @@ public:
   uv_handle_ptr_base_(std::nullptr_t) {}
   ~uv_handle_ptr_base_() { this->reset(); }
 
+  explicit operator bool() const;
+
   /**
    * Properly close the handle if needed and sets the inner handle to nullptr
    */

Tests/CMakeLib/testUVRAII.cxx

@@ -37,7 +37,7 @@ static bool testAsyncShutdown()
       return false;
     }
 
-    if (signal.get()) {
+    if (signal) {
       std::cerr << "Loop exited with signal not being cleaned up" << std::endl;
       return false;
     }
@@ -125,13 +125,13 @@ static bool testCrossAssignment()
     pipe.init(Loop, 0);
 
     cm::uv_stream_ptr stream = std::move(pipe);
-    if (pipe.get()) {
+    if (pipe) {
       std::cerr << "Move should be sure to invalidate the previous ptr"
                 << std::endl;
       return false;
     }
     cm::uv_handle_ptr handle = std::move(stream);
-    if (stream.get()) {
+    if (stream) {
       std::cerr << "Move should be sure to invalidate the previous ptr"
                 << std::endl;
       return false;