getcpu(): solves unclosed '/proc/cpuinfo'

sabnzbd/utils/getperformance.py

@@ -22,7 +22,8 @@ def getcpu():
             cputype = subprocess.check_output(["sysctl", "-n", "machdep.cpu.brand_string"]).strip()
 
         elif platform.system() == "Linux":
-            for myline in open("/proc/cpuinfo"):
+            with open("/proc/cpuinfo") as fp:
+                for myline in fp.readlines():
                     if myline.startswith("model name"):
                         # Typical line:
                         # model name      : Intel(R) Xeon(R) CPU           E5335  @ 2.00GHz