bug fixed

EdfFile.py

@@ -644,7 +644,7 @@ class  EdfFile:
             buffer += self.File.read(512)
             startFind += 512
         lastnewline = buffer.rfind('\n',endHeader)
-        if lastnewline > -1:
+        if endHeader < lastnewline <= endHeader + 2:
             endHeader = lastnewline
         return (buffer,endHeader)