More usage of dbm::is_result($r) instead of count($r):

- count() returns very different results and never a boolean (not even false on
  error condition).
- therefore you should NOT use it in boolean expressions. This still *can* be
  done in PHP because of its lazyness. But it is discouraged if it comes to
  more clean code.

Signed-off-by: Roland Häder <roland@mxchange.org>

include/Core/PConfig.php

@@ -33,7 +33,7 @@ class PConfig {
 			dbesc($family),
 			intval($uid)
 		);
-		if (count($r)) {
+		if (dbm::is_result($r)) {
 			foreach ($r as $rr) {
 				$k = $rr['k'];
 				$a->config[$uid][$family][$k] = $rr['v'];