Bug#26176 NdbObjectIdMap::expand unable to expand!! mysqld got signal 11

- try to catch as many malloc failures as possible and give error messages


ndb/src/ndbapi/ObjectMap.cpp:
  New BitKeeper file ``ndb/src/ndbapi/ObjectMap.cpp''

ndb/include/util/BaseString.hpp

@@ -185,6 +185,7 @@ public:
 private:
   char* m_chr;
   unsigned m_len;
+  friend bool operator!(const BaseString& str);
 };
 
 inline const char*
@@ -249,6 +250,12 @@ BaseString::operator!=(const char *str) const
     return strcmp(m_chr, str) != 0;
 }
 
+inline bool
+operator!(const BaseString& str)
+{
+    return str.m_chr == NULL;
+}
+
 inline BaseString&
 BaseString::assign(const BaseString& str)
 {