openssl: remove impossible EOFError raise in OpenSSL::Buffering

ruby/openssl@146c2d3

Author: kares

lib/jopenssl23/openssl/buffering.rb

@@ -132,7 +132,6 @@ def readpartial(maxlen, buf=nil)
       buf.replace(ret)
       ret = buf
     end
-    raise EOFError if ret.empty?
     ret
   end
 
@@ -182,7 +181,6 @@ def read_nonblock(maxlen, buf=nil, exception: true)
       buf.replace(ret)
       ret = buf
     end
-    raise EOFError if ret.empty?
     ret
   end