Fix conditional: don't just check the constant (thanks to clang for an
excellent warning message!)

cmr=v1.7.4:reviewer=hjelmn:subject=fix MCA_BASE_VAR_SOURCE_OVERRIDE test
Fix another clang warning: sendreq is undefined if proc==NULL.

cmr=v1.7.4:reviewer=hjelmn:subject=fix ob1 undefined sendreq value