conf: minor indentation cleanups

On few places there are too many levels of indentation when some of
them can be fixed with negating the option they are in or omitting
useless condition altogether.

src/conf/domain_conf.c

@@ -9181,9 +9181,11 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
         }
 
         for (i = 0; i < def->vcpus; i++) {
-            if (!virDomainVcpuPinIsDuplicate(def->cputune.vcpupin,
+            if (virDomainVcpuPinIsDuplicate(def->cputune.vcpupin,
                                             def->cputune.nvcpupin,
-                                             i)) {
+                                            i))
+                continue;
+
             virDomainVcpuPinDefPtr vcpupin = NULL;
 
             if (VIR_ALLOC(vcpupin) < 0) {
@@ -9197,7 +9199,6 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
             def->cputune.vcpupin[def->cputune.nvcpupin++] = vcpupin;
         }
     }
-    }
 
     if ((n = virXPathNodeSet("./cputune/emulatorpin", ctxt, &nodes)) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -14100,7 +14101,6 @@ virDomainDefFormatInternal(virDomainDefPtr def,
                           "</emulator_quota>\n",
                           def->cputune.emulator_quota);
 
-    if (def->cputune.vcpupin) {
     for (i = 0; i < def->cputune.nvcpupin; i++) {
         /* Ignore the vcpupin which inherit from "cpuset"
          * of "<vcpu>."
@@ -14125,7 +14125,6 @@ virDomainDefFormatInternal(virDomainDefPtr def,
         virBufferAsprintf(buf, "cpuset='%s'/>\n", cpumask);
         VIR_FREE(cpumask);
     }
-    }
 
     if (def->cputune.emulatorpin) {
         virBufferAsprintf(buf, "    <emulatorpin ");