Avoid compilation warning from MSVC
Avoid compilation warning from MSVC

Signed-off-by: Tor Lillqvist <a9ff1a38c0d094d92725714af3aa7948469a0905@iki.fi>

ieei/glib-old-android,gale320/glib,MathieuDuponchelle/glib,MathieuDuponchelle/glib,pstglia/platform-external-bluetooth-glib,MathieuDuponchelle/glib,djdeath/glib,ieei/glib,djdeath/glib,dicer/android_external_glib,01org/android-bluez-glib,ahmedammar/platform_external_gst_glib,johne53/MB3Glib,endlessm/glib,mzabaluev/glib,antono/glib,pstglia/platform-external-bluetooth-glib,tamaskenez/glib,bluez-android/glib,johne53/MB3Glib,pstglia/external-bluetooth-glib,bratsche/glib,cosimoc/glib,johne53/MB3Glib,01org/android-bluez-glib,johne53/MB3Glib,ieei/glib,cention-sany/glib,dicer/android_external_glib,endlessm/glib,zsx/glib,ieei/glib,01org/android-bluez-glib,iConsole/Console-OS_external_bluetooth_glib,pstglia/external-bluetooth-glib,pstglia/external-bluetooth-glib,pstglia/platform-external-bluetooth-glib,Distrotech/glib,bluez-android/glib,darren-clark/android_platform_external_bluetooth_glib,Distrotech/glib,pstglia/platform-external-bluetooth-glib,tamaskenez/glib,MathieuDuponchelle/glib,justinkb/aosp-bluez.glib,bratsche/glib,ahmedammar/platform_external_gst_glib,lukasz-skalski/glib,MathieuDuponchelle/glib,dicer/android_external_glib,lukasz-skalski/glib,cosimoc/glib,zsx/glib,endlessm/glib,tchakabam/glib,justinkb/aosp-bluez.glib,01org/android-bluez-glib,mzabaluev/glib,pstglia/platform-external-bluetooth-glib,cention-sany/glib,endlessm/glib,ieei/glib-old-android,01org/android-bluez-glib,justinkb/aosp-bluez.glib,gale320/glib,bluez-android/glib,cosimoc/glib,cosimoc/glib,tchakabam/glib,lukasz-skalski/glib,ahmedammar/platform_external_gst_glib,gale320/glib,djdeath/glib,tchakabam/glib,tchakabam/glib,cosimoc/glib,ieei/glib,Distrotech/glib,darren-clark/android_platform_external_bluetooth_glib,ieei/glib,tamaskenez/glib,cention-sany/glib,krichter722/glib,ahmedammar/platform_external_gst_glib,lukasz-skalski/glib,antono/glib,mzabaluev/glib,endlessm/glib,mzabaluev/glib,tamaskenez/glib,lukasz-skalski/glib,pstglia/external-bluetooth-glib,iConsole/Console-OS_external_bluetooth_glib,antono/glib,johne53/MB3Glib,krichter722/glib,iConsole/Console-OS_external_bluetooth_glib,gale320/glib,zsx/glib,cention-sany/glib,Distrotech/glib,justinkb/aosp-bluez.glib,gale320/glib,tamaskenez/glib,justinkb/aosp-bluez.glib,mzabaluev/glib,ieei/glib-old-android,ieei/glib-old-android,darren-clark/android_platform_external_bluetooth_glib,Distrotech/glib,krichter722/glib,antono/glib,dicer/android_external_glib,krichter722/glib,dicer/android_external_glib,iConsole/Console-OS_external_bluetooth_glib,bratsche/glib,bratsche/glib,bluez-android/glib,cention-sany/glib,iConsole/Console-OS_external_bluetooth_glib,darren-clark/android_platform_external_bluetooth_glib,bluez-android/glib,djdeath/glib,darren-clark/android_platform_external_bluetooth_glib,johne53/MB3Glib,krichter722/glib,tchakabam/glib,pstglia/external-bluetooth-glib,djdeath/glib,zsx/glib