Fix QEMU restore from file in raw format

The logic for running the decompression programs was broken in
commit f2387093, so that for
non-raw formats the decompression program was never run, and
for raw formats, it tried to exec an argv[] with initial NULL
in the program name.

* src/qemu/qemu_driver.c: Fix logic in runing decompression program

src/qemu/qemu_driver.c

@@ -3794,9 +3794,8 @@ static int qemudDomainRestore(virConnectPtr conn,
             goto cleanup;
         }
 
-        if (header.compressed != QEMUD_SAVE_FORMAT_RAW)
+        if (header.compressed != QEMUD_SAVE_FORMAT_RAW) {
             intermediate_argv[0] = prog;
-        else {
             intermediatefd = fd;
             fd = -1;
             if (virExec(conn, intermediate_argv, NULL, NULL,