don't run dmidecode.exe on Win2003

dmidecode.exe generates segfault on Win2003. We ensure we are on Win2003+
Windows before the execution.

see: #379
closes: #1746

Reported on the forum, please use the bug tracker Instead.
http://forum.fusioninventory.org/viewtopic.php?pid=8889

lib/FusionInventory/Agent/Task/Inventory/Input/Generic/Dmidecode.pm

@@ -6,27 +6,12 @@ use warnings;
 use English qw(-no_match_vars);
 use UNIVERSAL::require;
 
-use FusionInventory::Agent::Tools;
+use FusionInventory::Agent::Tools::Generic;
 
 sub isEnabled {
 
-    if ($OSNAME eq 'MSWin32') {
-        # don't run dmidecode on Win2003
-        # http://forge.fusioninventory.org/issues/379
-        Win32->require();
-        my @osver = Win32::GetOSVersion();
-        return if
-            $osver[4] == 2 &&
-            $osver[1] == 5 &&
-            $osver[2] == 2;
-    }
-
-    return unless canRun('dmidecode');
-
-    my $count = getLinesCount(
-        command => "dmidecode"
-    );
-    return $count > 10;
+    return unless getDmidecodeInfos();
+
 }
 
 sub doInventory {}

lib/FusionInventory/Agent/Tools/Generic.pm

@@ -24,8 +24,18 @@ sub getDmidecodeInfos {
         @_
     );
 
-    my $handle = getFileHandle(%params);
+    if ($OSNAME eq 'MSWin32') {
+        # don't run dmidecode on Win2003
+        # http://forge.fusioninventory.org/issues/379
+        Win32->require();
+        my @osver = Win32::GetOSVersion();
+        return if
+            $osver[4] == 2 &&
+            $osver[1] == 5 &&
+            $osver[2] == 2;
+    }
 
+    my $handle = getFileHandle(%params);
     my ($info, $block, $type);
 
     while (my $line = <$handle>) {
@@ -59,6 +69,8 @@ sub getDmidecodeInfos {
     }
     close $handle;
 
+    return if 2 > keys %$info;
+
     return $info;
 }