Fix memory leak

Summary:
Fixes https://github.com/facebook/flipper/issues/1561

Thanks to rdunlop for finding this!

Reviewed By: cekkaewnumchai

Differential Revision: D24923154

fbshipit-source-id: f4904730aecb9ecd7f391b5e1dcabc6a6db038cf

xplat/Flipper/CertificateUtils.cpp

@@ -205,11 +205,8 @@ bool generateCertSigningRequest(
   }
 
   ret = BIO_flush(csrBio);
-  if (ret != 1) {
-    free(pKey, x509_req, bne, privateKey, csrBio);
-    return ret;
-  }
 
+  free(pKey, x509_req, bne, privateKey, csrBio);
   return (ret == 1);
 }