Fix issue when parsing list of conditional DLC where not-installed custom DLC items would not be added ot list, potentially making it always true condition

Author: Mgamerz

src/com/me3tweaks/modmanager/ModManager.java

@@ -37,9 +37,9 @@
 
 public class ModManager {
     public static boolean IS_DEBUG = false;
-    public static final String VERSION = "5.1.8";
-    public static long BUILD_NUMBER = 96L;
-    public static final String BUILD_DATE = "11/03/2019";
+    public static final String VERSION = "5.1.9";
+    public static long BUILD_NUMBER = 97L;
+    public static final String BUILD_DATE = "11/26/2019";
     public static final String SETTINGS_FILENAME = "me3cmm.ini";
     public static DebugLogger debugLogger;
     public static boolean logging = false;

src/com/me3tweaks/modmanager/objects/Mod.java

@@ -2044,6 +2044,8 @@ public boolean addCustomDLCAlternates(String biogamedir) {
                                             .writeError("[alt dlc application] Alt dlc specifies non-existent Custom DLC/Mod Manager Header, this shouldn't really be possible. "
                                                     + conditionaldlc);
                                 }
+                            } else {
+                                remappedHeaders.add(dlcpart.toUpperCase());
                             }
                         } else {
                             remappedHeaders.add(dlcpart.toUpperCase());