Fix an small but quite nasty typo

Introduced in commit d4752785.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

lib/cmdlib.py

@@ -10900,7 +10900,7 @@ class LUInstanceMultiAlloc(NoHooksLU):
     self.ia_result = ial.result
     if self.op.dry_run:
-      self.dry_run_rsult = objects.FillDict(self._ConstructPartialResult(), {
+      self.dry_run_result = objects.FillDict(self._ConstructPartialResult(), {
         constants.JOB_IDS_KEY: [],
         })