[psaux] Fix memory leak (#58626).

* src/psaux/psstack.c (cf2_stack_init): If `cf2_stack_init' fails to
allocate the stack, return error early.

ChangeLog

@@ -1,3 +1,10 @@
+2020-06-19  Sebastian Rasmussen  <sebras@gmail.com>
+
+	[psaux] Fix memory leak (#58626).
+
+	* src/psaux/psstack.c (cf2_stack_init): If `cf2_stack_init' fails to
+	allocate the stack, return error early.
+
 2020-06-19  Sebastian Rasmussen  <sebras@gmail.com>
 
 	[base] Fix memory leak (#58624).

src/psaux/psstack.c

@@ -59,12 +59,12 @@
     CF2_Stack  stack = NULL;
 
 
-    if ( !FT_NEW( stack ) )
-    {
-      /* initialize the structure; FT_NEW zeroes it */
-      stack->memory = memory;
-      stack->error  = e;
-    }
+    if ( FT_NEW( stack ) )
+      return NULL;
+
+    /* initialize the structure; FT_NEW zeroes it */
+    stack->memory = memory;
+    stack->error  = e;
 
     /* allocate the stack buffer */
     if ( FT_NEW_ARRAY( stack->buffer, stackSize ) )