fix: 修复adb控制器的isconnected不奏效的bug (#6)

Co-authored-by: MistEO <mistereo@hotmail.com>

Author: SweetSmellFox

include/MaaUtils/IOStream/ChildPipeIOStream.h

@@ -31,6 +31,8 @@ class MAA_UTILS_API ChildPipeIOStream : public IOStream
     virtual bool release() override;
     virtual bool is_open() const override;
 
+    bool running();
+
 protected:
     virtual std::string read_once(size_t max_count) override;
 

source/IOStream/ChildPipeIOStream.cpp

@@ -130,6 +130,11 @@ bool ChildPipeIOStream::is_open() const
     return !pin_.eof();
 }
 
+bool ChildPipeIOStream::running()
+{
+    return child_.running();
+}
+
 std::string ChildPipeIOStream::read_once(size_t max_count)
 {
     constexpr size_t kBufferSize = 128 * 1024;