[C]: make sure tests use correct buffer to writev with.
[C]: make sure tests use correct buffer to writev with.

mikeb01/Aeron,mikeb01/Aeron,mikeb01/Aeron,real-logic/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron,mikeb01/Aeron,EvilMcJerkface/Aeron,real-logic/Aeron,EvilMcJerkface/Aeron