socket: properly check glibc version

Author: razvancrainea

socket_info.c

@@ -61,11 +61,13 @@
 
 #ifdef __OS_linux
 #include <features.h>     /* for GLIBC version testing */
-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 4)
+#if defined(__GLIBC_PREREQ)
+#if __GLIBC_PREREQ(2, 4)
 #include <ifaddrs.h>
 #define HAVE_IFADDRS
 #endif
 #endif
+#endif
 
 #define MAX_PROC_BUFFER	256