fix calling wrong latcomcaches for 2 methods

Author: JasperGeurtz

src/main/java/bwapi/Player.java

@@ -522,7 +522,7 @@ public boolean isResearching(final TechType tech) {
      */
     public boolean isUpgrading(final UpgradeType upgrade) {
         if (game.isLatComEnabled() && self().isUpgrading[upgrade.id].valid(game.getFrameCount())) {
-            return self().isResearching[upgrade.id].get();
+            return self().isUpgrading[upgrade.id].get();
         }
         return playerData.isUpgrading(upgrade.id);
     }

src/main/java/bwapi/Unit.java

@@ -970,7 +970,7 @@ public int getRemainingUpgradeTime() {
      * another unit.
      */
     public Unit getBuildUnit() {
-        if (game.isLatComEnabled() && self().buildType.valid(game.getFrameCount())) {
+        if (game.isLatComEnabled() && self().buildUnit.valid(game.getFrameCount())) {
             return game.getUnit(self().buildUnit.get());
         }
         return game.getUnit(unitData.getBuildUnit());