[eslint] block-spacing

.eslintrc.js

             'always',
             { 'objectsInArrays': true }
         ],
+        'block-spacing': [ 'error', 'always' ],
         'brace-style': 2,
         'comma-style': 2,
         'eol-last': 2,

modules/statistics/RTPStatsCollector.js

                     'upload': Math.round(sendBandwidth / 1000)
                 };
             }
-        } catch(e) {/* not supported*/}
+        } catch(e) { /* not supported*/ }
 
         if(now.type == 'googCandidatePair') {
             let active, ip, localip, type;
                 type = getStatValue(now, 'transportType');
                 localip = getStatValue(now, 'localAddress');
                 active = getStatValue(now, 'activeConnection');
-            } catch(e) {/* not supported*/}
+            } catch(e) { /* not supported*/ }
             if(!ip || !type || !localip || active != 'true') {
                 continue;
             }
                 resolution.height = height;
                 resolution.width = width;
             }
-        } catch(e) {/* not supported*/}
+        } catch(e) { /* not supported*/ }
 
         if (resolution.height && resolution.width) {
             ssrcStats.setResolution(resolution);
             audioLevel
                 = getStatValue(now, 'audioInputLevel')
                     || getStatValue(now, 'audioOutputLevel');
-        } catch(e) {/* not supported*/
+        } catch(e) { /* not supported*/
             logger.warn('Audio Levels are not available in the statistics.');
             clearInterval(this.audioLevelsIntervalId);
 

modules/xmpp/SDPUtil.js

 
             return null;
         }
-        if (line.substring(line.length - 2) == '\r\n') {// chomp it
+        if (line.substring(line.length - 2) == '\r\n') { // chomp it
             line = line.substring(0, line.length - 2);
         }
         const candidate = {};