cmd: Fix invalid "else if" execution.

programs/cmd/builtins.c

@@ -1561,7 +1561,7 @@ static void WCMD_part_execute(CMD_LIST **cmdList, const WCHAR *firstcmd,
                                      (*cmdList)->command)) {
 
           /* Swap between if and else processing */
-          processThese = !processThese;
+          processThese = !executecmds;
 
           /* Process the ELSE part */
           if (processThese) {

programs/cmd/tests/test_builtins.cmd

@@ -667,7 +667,45 @@ if /c==/c (
 ) else (
   echo parameter detection seems to be broken
 )
-
+SET elseIF=0
+if 1 == 1 (
+  SET /a elseIF=%elseIF%+1
+) else if 1 == 1 (
+  SET /a elseIF=%elseIF%+2
+) else (
+  SET /a elseIF=%elseIF%+2
+)
+if %elseIF% == 1 (
+  echo else if seems to work
+) else (
+  echo else if seems to be broken
+)
+SET elseIF=0
+if 1 == 2 (
+  SET /a elseIF=%elseIF%+2
+) else if 1 == 1 (
+  SET /a elseIF=%elseIF%+1
+) else (
+  SET /a elseIF=%elseIF%+2
+)
+if %elseIF% == 1 (
+  echo else if seems to work
+) else (
+  echo else if seems to be broken
+)
+SET elseIF=0
+if 1 == 2 (
+  SET /a elseIF=%elseIF%+2
+) else if 1 == 2 (
+  SET /a elseIF=%elseIF%+2
+) else (
+  SET /a elseIF=%elseIF%+1
+)
+if %elseIF% == 1 (
+  echo else if seems to work
+) else (
+  echo else if seems to be broken
+)
 echo --- case sensitivity with and without /i option
 if bar==BAR echo if does not default to case sensitivity
 if not bar==BAR echo if seems to default to case sensitivity

programs/cmd/tests/test_builtins.cmd.exp

@@ -438,6 +438,9 @@ Passed: file size check on subdir\a.a [8]@or_broken@Skipping file size check on
 if seems to work
 else seems to work
 if seems not to detect /c as parameter
+else if seems to work
+else if seems to work
+else if seems to work
 --- case sensitivity with and without /i option
 if seems to default to case sensitivity
 if /i seems to work