macEnv avoid cantProceed

src/libCom/macLib/macEnv.c

@@ -13,8 +13,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <errlog.h>
+
 #define epicsExportSharedSymbols
-#include "cantProceed.h"
 #include "epicsString.h"
 #include "macLib.h"
 
@@ -27,8 +28,10 @@ macEnvExpand(const char *str)
     char *dest = NULL;
     int n;
 
-    if (macCreateHandle(&handle, pairs))
-        cantProceed("macEnvExpand: macCreateHandle failed.");
+    if (macCreateHandle(&handle, pairs)){
+        errlogMessage("macEnvExpand: macCreateHandle failed.");
+        return NULL;
+    }
 
     do {
         destCapacity *= 2;
@@ -37,7 +40,10 @@ macEnvExpand(const char *str)
          * keep the original contents.
          */
         free(dest);
-        dest = mallocMustSucceed(destCapacity, "macEnvExpand");
+        dest = malloc(destCapacity);
+        if(!dest)
+            goto done;
+
         n = macExpandString(handle, str, dest, destCapacity);
     } while (n >= (destCapacity - 1));
 
@@ -51,7 +57,8 @@ macEnvExpand(const char *str)
             dest = realloc(dest, n);
     }
 
+done:
     if (macDeleteHandle(handle))
-        cantProceed("macEnvExpand: macDeleteHandle failed.");
+        errlogMessage("macEnvExpand: macDeleteHandle failed.");
     return dest;
 }