async하게 수정

FluentFTP/Client/FtpClient_HighLevel.cs

@@ -1067,7 +1067,7 @@ namespace FluentFTP {
 						// seek to required offset
 						fileData.Position = offset;
 
-					} catch (Exception ex2) {
+					} catch (Exception) {
 					}
 				}
 
@@ -1208,12 +1208,15 @@ namespace FluentFTP {
 			Stream upStream = null;
 			try {
 				long offset = 0;
-				bool checkFileExistsAgain = false;
+				//bool checkFileExistsAgain = false;
 
 				// check if the file exists, and skip, overwrite or append
-				if (existsMode == FtpExists.NoCheck) {
-					checkFileExistsAgain = true;
-				} else {
+				if (existsMode == FtpExists.NoCheck)
+				{
+					//checkFileExistsAgain = true;
+				}
+				else
+				{
 					if (!fileExistsKnown) {
 						fileExists = await FileExistsAsync(remotePath);
 					}
@@ -1254,7 +1257,7 @@ namespace FluentFTP {
 						// seek to required offset
 						fileData.Position = offset;
 
-					} catch (Exception ex2) {
+					} catch (Exception) {
 					}
 				}