Merge pull request ARMmbed#12933 from JanneKiiskila/armc-anon-mem-fix

Backport Arm C static RAM fix to Mbed OS 5.15 (ARMmbed#12462) (Mbed OS 5.15)

Author: 0xc0170

tools/memap.py

@@ -280,7 +280,10 @@ def parse_section(self, line):
         """  # noqa: E501
         test_re = re.match(self.RE, line)
 
-        if test_re:
+        if (
+            test_re
+            and "ARM_LIB_HEAP" not in line
+            ):
             size = int(test_re.group(2), 16)
 
             if test_re.group(4) == 'RO':