Update stdlib/LinearAlgebra/src/matmul.jl

Co-authored-by: N5N3 <[email protected]>

stdlib/LinearAlgebra/src/matmul.jl

@@ -807,15 +807,7 @@ function generic_matvecmul!(C::AbstractVector{R}, tA, A::AbstractVecOrMat, B::Ab
         end
         for k = 1:mB
             aoffs = (k-1)*Astride
-            bk = B[k]
-            # We use `false` for `Number`s since `Bool`s are also numbers and
-            # we assume that we can add them. This should be more efficient in
-            # general since it avoids allocating a zero number for something
-            # like `BigFloats`. However, we do not necessarily need to have
-            # vectors of numbers but can also have vectors of vectors. In this
-            # case, adding a scalar `false` to the vector-valued entries is
-            # not defined, so we need to use an appropriate zero.
-            b = _add(bk, bk isa Number ? false : zero(bk))
+            b = _add(B[k])
             for i = 1:mA
                 C[i] += A[aoffs + i] * b
             end