Refactor Faction variable naming in map panel

Renamed the 'independentFaction' variable to 'indFaction' for brevity and consistency. This change affects multiple locations within the InterstellarMapPanel class where faction checks are performed.

Author: IllianiBird

MekHQ/src/mekhq/gui/InterstellarMapPanel.java

@@ -478,7 +478,7 @@ protected void paintComponent(Graphics g) {
                     int minY = (int) Math.floor(scr2mapY(getHeight()) / HEX_SIZE);
                     int maxY = (int) Math.ceil(scr2mapY(0.0) / HEX_SIZE);
 
-                    Faction independentFaction = Factions.getInstance().getFaction("IND");
+                    Faction indFaction = Factions.getInstance().getFaction("IND");
 
                     for (int x = minX; x <= maxX; ++x) {
                         for (int y = minY; y <= maxY; ++y) {
@@ -495,7 +495,7 @@ protected void paintComponent(Graphics g) {
                             for (PlanetarySystem system : nearbySystems) {
                                 if (!isSystemEmpty(system) && path.contains(system.getX(), system.getY())) {
                                     Set<Faction> factions = system.getFactionSet(now);
-                                    factions.remove(independentFaction);
+                                    factions.remove(indFaction);
                                     hexFactions.addAll(factions);
                                 }
                             }
@@ -510,7 +510,7 @@ protected void paintComponent(Graphics g) {
                             }
 
                             if (hexFactions.size() > 1) {
-                                hexFactions.remove(independentFaction);
+                                hexFactions.remove(indFaction);
                             }
 
                             path.transform(transform);