Don't catch all exceptions in exchangeCode function

Author: David Bateman

extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/java/org/apache/guacamole/auth/openid/conf/.OpenIDWellKnown.java.swp

@@ -211,7 +211,7 @@ private String exchangeCode(String code, String verifier) throws GuacamoleExcept
             return (String) json.get("id_token");
 
         }
-        catch (Exception e) {
+        catch (IOException e) {
             logger.error("Rejected invalid OpenID code exchange: {}", e.getMessage(), e);
         }
         return null;

extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/java/org/apache/guacamole/auth/openid/token/TokenValidationService.java

@@ -31,7 +31,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-
 /*
  * Utility class to open a http connection to a URL, send a body
  * and receive a response in the form of a parsed JSON