Don't panic if GetPhysicallyInstalledSystemMemory is not available (before Vista)

lxn · lxn · commit c27269d66b2a · 2017-08-23T13:59:04.000+02:00
diff --git a/kernel32.go b/kernel32.go
@@ -142,8 +142,7 @@ func init() {
 	mulDiv = MustGetProcAddress(libkernel32, "MulDiv")
 	setLastError = MustGetProcAddress(libkernel32, "SetLastError")
 	systemTimeToFileTime = MustGetProcAddress(libkernel32, "SystemTimeToFileTime")
-	getPhysicallyInstalledSystemMemory = MustGetProcAddress(libkernel32, "GetPhysicallyInstalledSystemMemory")
-
+	getPhysicallyInstalledSystemMemory, _ = syscall.GetProcAddress(syscall.Handle(libkernel32), "GetPhysicallyInstalledSystemMemory")
 }
 
 func CloseHandle(hObject HANDLE) bool {
diff --git a/syslink.go b/syslink.go
@@ -10,7 +10,7 @@ const (
 	INVALID_LINK_INDEX = -1
 	MAX_LINKID_TEXT    = 48
 	L_MAX_URL_LENGTH   = 2048 + 32 + len("://")
-	WC_LINK = "SysLink"
+	WC_LINK            = "SysLink"
 )
 
 const (

Original file line number	Diff line number	Diff line change
`@@ -142,8 +142,7 @@ func init() {`
`142`	`142`	`mulDiv = MustGetProcAddress(libkernel32, "MulDiv")`
`143`	`143`	`setLastError = MustGetProcAddress(libkernel32, "SetLastError")`
`144`	`144`	`systemTimeToFileTime = MustGetProcAddress(libkernel32, "SystemTimeToFileTime")`
`145`		`- getPhysicallyInstalledSystemMemory = MustGetProcAddress(libkernel32, "GetPhysicallyInstalledSystemMemory")`
`146`		`-`
	`145`	`+ getPhysicallyInstalledSystemMemory, _ = syscall.GetProcAddress(syscall.Handle(libkernel32), "GetPhysicallyInstalledSystemMemory")`
`147`	`146`	`}`
`148`	`147`
`149`	`148`	`func CloseHandle(hObject HANDLE) bool {`