Stereochemistry of hydrogenation with Raney nickel If I react the following with Raney nickel and $\ce{H2}$,

$\hspace{65 mm}$

then I am getting a meso compound, as the $\ce{H-}$ anion will have anti addition, right? One $\ce{H}$ will attack on right $\ce{C}$ from bottom and the other on the left $\ce{C}$ from the top. That makes it a meso. But in the book it says, there is racemization. How?
The hydrogenation of alkenes using heterogenous catalysts such as Raney nickel is syn-stereospecific; i.e. both hydrogen atoms are added to the same face of the double bond.

Therefore, the hydrogenation of (2​E)-(2,3-2H2)but-2-ene yields 
(2​R,3​R)-(2,3-2H2)butane and
(2​S,3​S)-(2,3-2H2)butane.