Added noexcept specifier to custom deleters throughout the project. (#1735)

Author: Dimi1010

Common++/src/SystemUtils.cpp

@@ -60,7 +60,7 @@ namespace
 	/// A deleter that cleans up a FILE handle using pclose.
 	struct PcloseDeleter
 	{
-		void operator()(FILE* ptr) const
+		void operator()(FILE* ptr) const noexcept
 		{
 			PCLOSE(ptr);
 		}

Pcap++/header/PcapFilter.h

@@ -70,7 +70,7 @@ namespace pcpp
 		/// A deleter that cleans up a bpf_program object.
 		struct BpfProgramDeleter
 		{
-			void operator()(bpf_program* ptr) const;
+			void operator()(bpf_program* ptr) const noexcept;
 		};
 	}  // namespace internal
 

Pcap++/header/PcapUtils.h

@@ -18,14 +18,14 @@ namespace pcpp
 		/// A deleter that cleans up a pcap_t structure by calling pcap_close.
 		struct PcapCloseDeleter
 		{
-			void operator()(pcap_t* ptr) const;
+			void operator()(pcap_t* ptr) const noexcept;
 		};
 
 		/// @class PcapFreeAllDevsDeleter
 		/// A deleter that frees an interface list of pcap_if_t ptr by calling 'pcap_freealldevs' function on it.
 		struct PcapFreeAllDevsDeleter
 		{
-			void operator()(pcap_if_t* ptr) const;
+			void operator()(pcap_if_t* ptr) const noexcept;
 		};
 	}  // namespace internal
 

Pcap++/src/PcapFilter.cpp

@@ -31,7 +31,7 @@ namespace pcpp
 
 	namespace internal
 	{
-		void BpfProgramDeleter::operator()(bpf_program* ptr) const
+		void BpfProgramDeleter::operator()(bpf_program* ptr) const noexcept
 		{
 			pcap_freecode(ptr);
 			delete ptr;

Pcap++/src/PcapUtils.cpp

@@ -6,12 +6,12 @@ namespace pcpp
 {
 	namespace internal
 	{
-		void PcapCloseDeleter::operator()(pcap_t* ptr) const
+		void PcapCloseDeleter::operator()(pcap_t* ptr) const noexcept
 		{
 			pcap_close(ptr);
 		}
 
-		void PcapFreeAllDevsDeleter::operator()(pcap_if_t* ptr) const
+		void PcapFreeAllDevsDeleter::operator()(pcap_if_t* ptr) const noexcept
 		{
 			pcap_freealldevs(ptr);
 		}

Pcap++/src/PfRingDeviceList.cpp

@@ -21,7 +21,7 @@ namespace pcpp
 		/// A deleter that cleans up a pfring structure by calling pfring_close.
 		struct PfRingCloseDeleter
 		{
-			void operator()(pfring* ptr) const
+			void operator()(pfring* ptr) const noexcept
 			{
 				pfring_close(ptr);
 			}