Fix(Pointer): Fix the wrong value passed to size

[wjrforcyber]

What

I used to change nContent to pointer in PR #362 , but missing this line when carelessly copy-paste the original implementation. The size of the malloced space is wrongly passed a pointer. When I read a library sky130_fd_sc_hd__tt_025C_1v80.lib, the crash shows, I believe this might also cause the issue #372 .

Why didn't notice

I believe that the address of nContent is reinterpreted and casted to a size_t in

#define ABC_ALLOC(type, num)     ((type *) malloc(sizeof(type) * (size_t)(num)))

and sometimes this address is a large number and even memory check tool like leaks didn't notice.

How

nContents to *nContents

Check

Before

(lldb) r -c "read_lib ./sky130_fd_sc_hd__tt_025C_1v80.lib"
There is a running process, kill it and restart?: [Y/n] Y
Process 63230 exited with status = 9 (0x00000009) killed
Process 70395 launched: '/Users/jingrenwang/Github/ABC/abcOri/abc/abc' (arm64)
ABC command line: "read_lib ./sky130_fd_sc_hd__tt_025C_1v80.lib".

Process 70395 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xc3f2a5)
    frame #0: 0x000000010038bf30 abc`Scl_LibertyFileContents(pFileName="./sky130_fd_sc_hd__tt_025C_1v80.lib", nContents=0x0000600003b180b0) at sclLiberty.c:607:31 [opt]
   604          long RetValue = 0;
   605          RetValue = fread( pContents, *nContents, 1, pFile );
   606          fclose( pFile );
-> 607          pContents[*nContents] = 0;
   608      }
   609      return pContents;
   610  }
Target 0: (abc) stopped.

After

(lldb) r -c "read_lib ./sky130_fd_sc_hd__tt_025C_1v80.lib"
Process 73765 launched: '/Users/jingrenwang/Github/ABC/abcOri/abc/abc' (arm64)
ABC command line: "read_lib ./sky130_fd_sc_hd__tt_025C_1v80.lib".

Library "sky130_fd_sc_hd__tt_025C_1v80" from "./sky130_fd_sc_hd__tt_025C_1v80.lib" has 334 cells (94 skipped: 63 seq; 13 tri-state; 18 no func; 0 dont_use).  Time =     0.08 sec
Warning: Detected 9 multi-output gates (for example, "sky130_fd_sc_hd__fa_1").
Process 73765 exited with status = 0 (0x00000000)