[#892] explicitly use MSTATIC in LoadPartitioning

This patch adds MSTATIC to the switch case in the LoadPartitioning.
Before, this was implicitly handled by the default case.

Closes #892

src/runtime/local/vectorized/LoadPartitioning.h

@@ -145,6 +145,7 @@ class LoadPartitioning {
             chunkSize = mfscChunk;
             break;
         }
+        case SelfSchedulingScheme::MSTATIC:
         default: {
             chunkSize = (uint64_t)ceil(totalTasks / totalWorkers / 4.0);
             break;