3 minor sample game cleanups:

* changed bitwise & to logical &&
* removed redundant state check
* moved a strcpy inside a NULL check to prevent a crash.
  NOTE: nothing sensible will happen as a result, but no crash at least.

games/transmission/screens/screen_ending.c

@@ -110,10 +110,12 @@ void InitEndingScreen(void)
         {
             // WARNING: It fails if the last sentence word has a '.' after space
             char *title = StringReplace(headline, messageWords[i].text, codingWords[messageWords[i].id]);
-            
-            strcpy(headline, title);     // Base headline updated
-            
-            if (title != NULL) free(title);
+           
+            if (title != NULL)
+            {
+                strcpy(headline, title);     // Base headline updated
+                free(title);
+            }
         }
     }