virt: make Virtualization an anonymous enum

This makes llvm happy when we assign an error code to the variable.

src/detect-virt/detect-virt.c

@@ -129,7 +129,7 @@ int main(int argc, char *argv[]) {
         switch (arg_mode) {
 
         case ANY_VIRTUALIZATION: {
-                Virtualization v;
+                int v;
 
                 v = detect_virtualization(&id);
                 if (v < 0) {

src/hostname/hostnamed.c

@@ -123,7 +123,7 @@ static const char* fallback_chassis(void) {
         int r;
         char *type;
         unsigned t;
-        Virtualization v;
+        int v;
 
         v = detect_virtualization(NULL);
 

src/shared/condition-util.c

@@ -121,8 +121,7 @@ bool condition_test_kernel_command_line(Condition *c) {
 }
 
 bool condition_test_virtualization(Condition *c) {
-        int b;
-        Virtualization v;
+        int b, v;
         const char *id;
 
         assert(c);

src/shared/virt.c

@@ -278,7 +278,7 @@ finish:
 }
 
 /* Returns a short identifier for the various VM/container implementations */
-Virtualization detect_virtualization(const char **id) {
+int detect_virtualization(const char **id) {
         int r;
 
         r = detect_container(id);

src/shared/virt.h

@@ -24,12 +24,12 @@
 int detect_vm(const char **id);
 int detect_container(const char **id);
 
-typedef enum Virtualization {
+enum {
         VIRTUALIZATION_NONE = 0,
         VIRTUALIZATION_VM,
         VIRTUALIZATION_CONTAINER,
         _VIRTUALIZATION_MAX,
         _VIRTUALIZATION_INVALID = -1
-} Virtualization;
+};
 
-Virtualization detect_virtualization(const char **id);
+int detect_virtualization(const char **id);

src/test/test-architecture.c

@@ -26,7 +26,7 @@
 
 int main(int argc, char *argv[]) {
         Architecture a;
-        Virtualization v;
+        int v;
         const char *id = NULL;
 
         v = detect_virtualization(&id);