Reduce the instruction overhead of OpenSSL calls

[ryanewang(王蕾)]

Hi，
From the openssl documentation, when the value of ret is greater than 0, the 
SSL_get_error() function returns SSL_ERROR_NONE. 
So, it seems that when the return value of SSL_read() or SSL_write() function 
is greater than 0, we don't need to make an error judgment. 
The attached patch attempts to reduce unnecessary error judgments. 


I am glad for feedback and reviews!





                    
                                                          腾讯                    
                                                                                
                  
                                                                    ryanewang   
                                                 研发四组员工

0001-Patch-Remove-unnecessary-OpenSSL-error-judgment.patch
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