Fix rendering links in shared media

.env

@@ -1,5 +1,5 @@
 API_ID=1025907
 API_HASH=452b0359b988148995f22ff0f4229750
 VERSION=1.0.0
-VERSION_FULL=1.0.0 (46)
+VERSION_FULL=1.0.0 (47)
-BUILD=46
+BUILD=47

src/lib/richtextprocessor.ts

@@ -923,6 +923,7 @@ namespace RichTextProcessor {
   }
 
   export function getAbbreviation(str: string, onlyFirst = false) {
+    if(!str) return '';
     const splitted = str.trim().split(' ');
     if(!splitted[0]) return '';