Fix null pointer

Former-commit-id: 3ac9166

Author: Ghost-chu

src/main/java/org/maxgamer/quickshop/Util/MsgUtil.java

@@ -107,7 +107,12 @@ public static void loadItemi18n() {
 	}
 	public static String getItemi18n(String ItemBukkitName) {
 		ItemBukkitName = ItemBukkitName.trim().replaceAll(" ", "_").toUpperCase(Locale.ROOT);
-		String Itemname_i18n = itemi18n.getString("itemi18n."+ItemBukkitName).trim();
+		String Itemname_i18n = null;
+		try {
+		Itemname_i18n = itemi18n.getString("itemi18n."+ItemBukkitName).trim().replaceAll(" ", "_");
+		}catch (Exception e) {
+			Itemname_i18n = null;
+		}
 		if(ItemBukkitName==null) {
 			return "";
 		}

src/main/java/org/maxgamer/quickshop/Util/Util.java

@@ -347,7 +347,7 @@ public static String getNameForSign(ItemStack itemStack) {
 		ItemStack is = itemStack.clone();
 		is.setAmount(1);
 
-		String name = MsgUtil.getItemi18n(itemStack.getType().name());
+		String name = MsgUtil.getItemi18n(itemStack.getType().name()).trim();
 
 		String[] nameParts = name.split("_");
 		if (nameParts.length==1) {