display: libmemtrack: Fix null file pointer

File close operation should not be call for null file
pointer.

Change-Id: I947e65cb3eafb6994d24673be27b353a4712936a
CRs-Fixed: 2253400
diff --git a/libmemtrack/kgsl.c b/libmemtrack/kgsl.c
index a292d45..e17c520 100644
--- a/libmemtrack/kgsl.c
+++ b/libmemtrack/kgsl.c
@@ -81,7 +81,6 @@
 
         fp = fopen(syspath, "r");
         if (fp == NULL) {
-            fclose(fp);
             return -errno;
         }